Hi yuppicide,
That really depends on how you are defining “alternative coil hybrid” mattress but there would be many hundreds of them yes. Innerspring matttresses with some type of foam comfort layers are the most common type of mattresses that are sold in the industry.
Assuming that the materials in a mattress you are considering are durable enough for your body type and meet the quality/durability guidelines here … the choice between different types and combinations of materials and components or different types of mattresses are more of a preference and a budget choice than a “better/worse” choice (see this article).
If you are asking whether there would be other mattresses that would be a reasonable “match” or “approximation” of any of the mattresses you have been testing then this would be a very different question.
The short answer would be no.
The longer version would be …
There is more information in post #9 here about the different ways that one mattress can “match” or “approximate” another one but every layer and component in a mattress (including the cover) will affect the feel and performance of every other layer and component and the mattress “as a whole” and mattress manufacturers generally try to differentiate their mattress from the mattresses made by other manufacturers and don’t normally try to “match” another mattress that is made by a different manufacturer.
Unless a manufacturer specifically says in their description of a mattress that one of their mattresses in the same general category is designed to “match” or “approximate” another one in terms of firmness or “feel” (or they are very familiar with both mattresses and can provide reliable guidance about how they compare based on the “averages” of a larger group of people) then the only reliable way to know if a mattress will “feel” similar to you would be based on your own personal testing or your actual sleeping experience.
All the major brands (such as Sealy/Stearns & Foster, Simmons, and Serta) tend to use lower quality materials in their mattresses than most of their smaller competitors that will tend to soften or break down prematurely relative to the price you pay and I would avoid any mattress where you aren’t able to find out the type and quality/durability of the materials inside it (see this article) and confirm that they meet the quality/durability guidelines here which would exclude almost all of the major brand mattresses and the major chain stores that specialize in them (see the guidelines here along with post #3 here and post #12 here and post #404 here).
One of the most frustrating parts of mattress shopping can be spending time testing a mattress and finding out that you like it and it’s a good match for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) only to find out that the information you need to identify any potential weak links in the mattress or make meaningful comparisons to other mattresses isn’t available and you’ve wasted the time you spent testing the mattress.
As I mentioned in my previous reply I would avoid using mattress reviews as a reliable source of information to help you choose a mattress.
I would also be very cautious about brand shopping in general because you are buying a specific mattress not the brand and all manufacturers have access to the same or similar components and materials. Many manufacturers make a wide range of mattresses that can vary from lower quality and less durable materials to higher quality and more durable materials in a wide range of prices. The name of the manufacturer on the label or the price of the mattress won’t tell you anything about whether a specific mattress is suitable for you in terms of PPP or whether there are any lower quality materials or weak links in the design that would affect the durability and useful life of the mattress (which are the two most important parts of a mattress purchase). There is more about the risks of brand shopping in post #5 here and post #12 here.
One of the most effective “shortcuts” that can help cut through much of the confusion when you are buying a mattress is to focus first on finding and dealing with knowledgeable and experienced retailers and/or manufacturers that have your best interests at heart (and aren’t just interested in selling you anything that they can convince you to buy). These are the ones that already know what you would otherwise need to learn (including the information in many of the links I listed) and understand the importance of choosing a mattress that is a good “match” for you and knowing what is inside any mattress that you are considering. They can provide you with the type of information and guidance that can help you make the best possible choice. Who you choose to deal with can be one of the most important parts of a successful mattress purchase.
Once you have found a few of these types of knowledgeable and experienced manufacturers or retailers then In its simplest form … choosing the “best possible” mattress for any particular person really comes down to …
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Careful testing (hopefully using the testing guidelines in the tutorial) to make sure that a mattress is a good match for you in terms of “comfort”, firmness, and PPP (Posture and alignment, Pressure relief, and your Personal preferences) … and/or that you are comfortable with the options you have available to return, exchange, or “fine tune” the mattress and any costs involved if you can’t test a mattress in person or aren’t confident that your mattress is a suitable choice.
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Checking to make sure that there are no lower quality materials or weak links in the mattress that could compromise the durability and useful life of the mattress (see this article and the durability guidelines it links to).
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Comparing your finalists for “value” based on #1 and #2 and all the other parts of your personal value equation that are most important to you.
Phoenix