Hi urvgotti.
Welcome to our Mattress Forum. 
It is great that you have been able to go out and do some in-person mattress testing.
As Ebs offered much valuable input and pointed to good resources I’ll just reinforce a few things along the way and add a few more considerations you may wish to look at while assessing your options.
[quote]I am a 185 pound mid-30s male side(70)/back(30) sleeper. I use a CPAP. I live in Alberta.
At the store, I tried the malmo and found that I still had some pressure on my shoulder when lying on my side. The rep swapped the 2" latex layer for a 2" memory foam layer and it had just enough sink that I no longer had the pressure feeling. I really liked it.[/quote]
Thank you for sharing your stats with us but you’d need to use your height to calculate your BMI to have a baseline for the thickness comfort you may need. Depending on your BMI it may be that 2" of comfort layer may not be thick or soft enough for your needs. So there may be a little more to your pressure points of the Malmo latex version.
In terms of how much thickness/softness you need I’d keep in mind that side sleepers have deeper gaps to “fill in” and need a deeper cradle to relieve pressure so the gaps are filled in and help spread the weight over the mattress. This is to say that you’d need to “sink IN” to the comfort layers more and maybe 2" of latex is just not enough thickness for you. Generally, comfort layers need to be a little softer and/or thicker than for back or stomach sleeping positions. In general, a good starting point for a good comfort layer for a side sleeper is 3" and then depending on weight, body shape, preferences, and the firmness of the support layers, to go up or down from there. Most side sleepers will fall in the range of from 2" -4".
You may find that the BE memory foam version can also result in pressure points as the memory foam comfort often changes during the course of the night. What starts off as being comfortable, when you lie on a memory foam mattress for long enough, it will start to soften with heat and pressure and become semi-solid and it will “melt” under pressure.to the point where you’d start to bottom out on the springs below. As ebs mentioned, with the memory foam version, I would also keep thedurability guidelines in mind
While memory foam does a very good job at forming a cradle around your body and helping with pressure relief, it will generally be the least breathable and most insulating of the foam comfort materials, so the temperature can be an issue. If you do choose memory foam, you’d want to make sure that you don’t choose something with so much memory foam on top that you sink in too deeply. One of the reasons people drift to “natural” materials are more temperature neutral as opposed to manmade/synthetic counterparts.
Some of the factors involved in how “hot a mattress sleeps” are how closely the foam conforms to your body (the more closely it conforms around you the more insulating it is), how soft or thick the foam in the comfort layers are (the softer/thicker it is the deeper you will sink into the more insulating materials), the type of quilting used in the mattress (natural fibers allow for more airflow and humidity control which translates into better temperature regulation), the type of ticking (cover) used (natural or more breathable fibers such as cotton or viscose or even some of the more breathable synthetics will wick away moisture and ventilate better and humidity control is a key part of temperature control), and on any cooling technologies used in the mattress such as ventilating and moisture-wicking materials, heat conductive materials, or phase change materials.
In addition to this … the mattress protector you choose along with your sheets and other bedding and what you wear when you sleep will also have a significant effect on temperature regulation because they can either add to the insulating effect or to the ventilating and moisture-wicking effect of your mattress. Bedding made from natural fibers or viscose materials (like bamboo) will also tend to be cooler than synthetic fibers and linen sheets along with silk are probably the coolest of all the natural fibers for those where the sleeping temperature is a main priority. In many cases changing the mattress protector, sheets, or bedding to cooler versions can make “enough” of a difference for many people who would otherwise sleep hot on a mattress.
There is more about the many variables that can affect the sleeping temperature of mattresses/sleeping systems in post #2 here that can help you choose the types of materials and components that are most likely to keep you in a comfortable temperature range.
This mattress is finished off with 100% organic cotton ticking & French sheep wool, which is great for temperature and humidity regulation. These are the uppermost layers that come in contact with your skin and affect the temperature microclimate but some of this is offset by the memory foam and you’d need to run everything by your personal value equation and what is most important to you (including the price of course and the options you have available after purchase if your choice doesn’t turn out as well as you hoped for)…
[quote]2. Is it worth going high end if I’m getting pocket coils with a foam layer? With that foam layer, does the spring quality matter a bit less?
3. The price is $2799 CAD for just the mattress. Thoughts on that? I don’t imagine BE ever really goes on sale.[/quote]
While there is no doubt in my mind that the materials BE use in their mattresses would last that long and stay consistent in their feel over the long term, I wouldn’t pay premium prices when I can find something similar at a lower price point. Even the “lower” BE prices are a fair bit more than equivalent mattresses using the same materials made elsewhere, especially as you are thinking of getting the a memory foam version. But all is dependent again on personal value equation
While you are correct that “a big part of BE’s marketing” is focused on natural materials BE’s higher prices are reflecting higher-quality construction and materials (which would mitigate the heat issues that many memory foam mattresses have), are handmade, and are backed by many certifications.
As ebs previously mentioned…If you aim to get a less expensive box spring, you may wish to check with the store that it does not void the mattress warranty.
Once you’ve had the chance to go through the readings mentioned in this thread let us know if any other questions arise.
Phoenix