Hi loco,
Besides the fact that firmness or softness is very subjective and relative to the body type, sleeping position, and individual perceptions of each person … there are thousands of foam mattresses that range from very firm to very soft. There are different types of foam (polyfoam, memory foam, and latex foam) and all of them come in a wide range of softness levels so there is no “standard” firmness level for a foam mattress. Regardless of reviews about the comfort or softness of a mattress which may have very little relevance to what a mattress will feel like for you and which I would take with a big grain of salt (see post #13 here) … the goal is always to find a mattress that is a good match for you rather than for someone else who may be very different from you.
Yes … most people (and Dreamfoam as well) have said that it is a reasonable approximation of the Cloud Luxe in terms of softness/firmness (perhaps a little firmer) but it will have a different “feel” because the foams used in the mattress are different from the Cloud Luxe.
You can read more about the different ways that one mattress can “match” another one in post #9 here. To find a comparable mattress that is available locally you would need to find a mattress that uses the same materials and components in a similar thickness and firmness level to one of the firmness options that the Ultimate Dreams latex has available (you can choose the firmness level of the comfort layer which means that it isn’t a specific mattress design). This may be difficult to find and would involve calling local retailers or manufacturers and asking if they have a latex hybrid that uses 3" of talalay latex over a polyfoam support core with a polyfoam quilting layer. Mattresses that have at least 3" of Talalay latex on top would give you a very general sense or reference point of what Talalay latex feels like even if the softness level or the overall “feel” of the mattress may be very different because of the many possible differences in design even between two mattresses that use the same materials.
You can read my comments about this in post #108 here and the posts it links to. At your weight it won’t make a significant difference in terms of durability because the most important part of the durability of a mattress are the top layers.
Some of the better possibilities or options I’m aware of that are in reasonable driving distance from Culpeper, VA are listed in post #9 here.
Phoenix