Hi LatexLoon,
Only you can feel what you feel on a mattress and there are too many unknowns, variables, and personal preferences involved for anyone to be able to make specific recommendations or suggest a specific mattress or combination of layers or materials based on specs (either yours or a mattress), health conditions, individual circumstances, or “theory at a distance” (see mattress firmness/comfort levels in post #2 here). I can certainly help you narrow down your options by avoiding the worst ones and with “how” to choose or act as a fact check but not with which specific mattress, company, or manufacturer to choose.
Foam order has a range of latex mattresses available while Bay Bed and Mattress specializes in pocket coil/latex hybrids although they make all latex mattresses as well. The choice between different types of mattresses or components would be a preference choice rather than a better/worse choice. There is more about innerspring support cores vs latex support cores in post #28 here and the posts it links to but the most reliable way to know which type of mattress you tend to prefer will be based on your own testing and personal experience.
Bay Bed also has Talalay latex while Foam Order focuses more on Dunlop (although they do have some Talalay available). There is more about the differences between Talalay and Dunlop in post #7 here but this is also a preference choice rather than a “better/worse” choice.
There is also more about the most important parts of the “value” of a mattress purchase in post #13 here that can help you make more meaningful quality/value comparisons between mattresses.
Neither one would have any lower quality materials or weak links in their design so you could focus more on the suitability and value parts of your choice.
This would generally depend on several risk factors combining together for this to happen but you can see my thoughts about solid surface support systems vs slats in post #10 here.
While allergy encasements can be part of a strategy to help deal with more severe dust mite allergies (and there are some that are quite breathable so this wouldn’t be an issue) … if you don’t have significant allergies then I would lean towards a mattress protector vs a mattress encasement as well. There is more about dust mites and allergies in post #2 here and about mattress encasements in post #2 here and about the pros and cons of different types of mattress protectors in post #89 here.
I think it’s always a good idea to call first before visiting any retailer or manufacturer … even if they are local … so you can get some sense of the types of mattresses they have available and the type of knowledge, service, and transparency that you can expect when you go there and then you can decide who to visit based on the results of your phone conversations.
These are the types of “should I” questions that only you can answer but if I was in your shoes I would at least talk with Bay Bed and then decide how you feel about making the trip.
You’ve probably seen this already but the better options and possibilities I’m aware of in the San Francisco area are listed in post #2 here.
Phoenix