Hi v-ram,
Unfortunately I’m not familiar enough with the specifics of each manufacturer, your own needs and preferences, or all the mattresses that each of them carry to make any specific suggestions for retailers or manufacturers for the Toronto area and I never make specific mattress suggestions because there are just too many unknowns and variables for theory at a distance to be an effective way to make a choice (see mattress firmness/comfort levels in post #2 here). Over time and with more feedback from forum members the Toronto market should “clear up” a little but I do know based on the threads that I linked earlier that there is some good value there for 100% natural Dunlop latex although the flexibility of the designs may not be the same as the Sleeptek or the Greensleep (outside of Ideal who also carry latex mattresses that can be customized with individual exchangeable layers). Making specific suggestions in an area where personal preference plays such a large role is not a “rabbit hole” that I intend to enter. 
This is partly for time reasons (it would take several hours per forum member to look in detail at every website and talk with individual retailers or manufacturers about whether what they carry would “fit” what each member is looking for) and partly because my goal is more to help people with “how” to choose than “what” to choose. I much prefer to limit my help to the “narrowing down” process to help eliminate the overwhelming number of worse choices but then leave the last half of the research which identifies the “best” choices up to each individual member here.
In the earliest days of the website before there was much traffic I offered a service that could help people on a more individual basis. It was based on an honor system where the cost would be $100 and I would spend an hour or so on the phone with them and then do the individual research in each area along with followup calls to help them choose the specific mattress and retailer that was “best” for them or at least narrow it down to a very small “final list”. If they agreed that the “savings” were more than the cost of the service and were happy with their purchase then they would pay the $100. If they didn’t there would be no charge. Even then … I quickly realized that the process was so time intensive that there was be no time available to continue the broader research that could help thousands of people all across North America or to even answer posts on the forum and if I continued doing this I would quickly become the bottleneck for the growth and development of the site so I quickly dropped it … lesson learned
My “best” suggestion would be to use the layering you do best with in your testing as a guideline and then talk to the manufacturers or retailers that are most promising to you and tell them the specifics of the mattress you prefer and then ask them if they have or can make anything that they believe would be roughly comparable that would be worth testing.
Zoning is a very interesting concept and in certain circumstances can be very helpful. The “challenge” is that the “best” zoning is just as individual as the “best” mattress. The difficulty with the zoning systems that are pre-fabricated or have more zones than 3 is that they may not match the body type of the person either in terms of individual firmness or zone spacing. In addition to this the individual zones of many of the prefabricated zoning systems are not much different from each other and are inside the range of the ILD variation of most Dunlop Latex itself. It’s not that they are “bad” (you can test them to make sure that they work for your body type) … but that they may not have the benefits that more customized or differentiated zones can have for those that need it. There are very few manufacturers that actually build custom zones.
Latex and other materials that have a very high compression modulus already have a form of “built in” zoning because they get firmer faster with deeper compression so a latex layer that is softer with initial compression will get firmer much faster with deeper compression and “stop” the heavier parts of the body that sink in more deeply faster than materials that don’t get firm as quickly with deeper compression. Late in particular also has great “point elasticity” which allows it to contour and compress under individual areas of the body rather than affecting areas beside the area of compression. This allows the use of softer layers that will “allow” the shoulders to sink in with less risk of sinking in too far with the heavier areas of the body such as the pelvis. The relative surface area and weight concentration of each part of the body also plays a role. The shoulders are much lighter than the pelvis but when they first contact the mattress they also have less surface area until you sink in enough so that the torso begins t make contact at which point the surface area increased rapidly and further sinking in is “stopped”. This is partly connected to the “ideal” thickness of the comfort layers.
Even with this though … with more difficult body types then zoning can be very helpful … especially in the center third of the mattress where the body weight is more concentrated. This allows for the use of softer comfort layers with less risk of the pelvis sinking in too far. In some cases other types of zoning (such as reverse zoning) can be used to compensate for unusual weight distribution, body types, or “special needs” and can also be very helpful. Zoned mattresses other than the prefabricated types are not commonly available on a local basis and where they are I would test them in person to make sure that the design of the zoning is beneficial for your body type and sleeping style or at least “not harmful” compared to non zoned designs. There is more about zoning in this article and in post #11 here.
@ Lisa_Mocha,
Unfortunately the industry as a whole has become so focused on “marketing stories” that actual information about the materials themselves of the quality of the materials and components or people who have the knowledge and experience to help “educate” their customers has become the exception rather than the rule. This often leads people to “become” the experts rather than “find the experts” which involves a learning curve that can be daunting.
For those who have “enough” information to recognize the difference between retailers or manufacturers that are providing good advice and suggestions and who are comfortable talking about the quality of the materials in their mattress … and who also sell good quality and value mattresses … the learning curve and complexity is much less because they already know what you would otherwise have to learn.
Since the chain stores and mainstream retailers took over the mattress industry … it has become much more difficult to find better retailers or manufacturers in all the “noise” of constant advertising and for those who are determined to make more informed choices … it is much more complex than it was when meaningful information and knowledge was more common that it is today.
Hopefully the members here that take the time to learn “just enough” to make good choices or at least recognize the better retailers and manufacturers will be part of a longer term process of educating others as well that helps increase the market share of good merchants that sell better quality and value mattresses and focus on sales based on educating their customers more than on marketing tactics but it will be a slow process that takes time because the chain stores and major brands long ago replaced education with marketing.
Phoenix