Hi jepurdy,
You’re most welcome.
I would have the same concern.
I think that you’re referring to the list of simplified choice mattresses. These models you listed would contain materials that would be suitable for your weight range. The BME would be a latex mattress, versus the memory foam feel of the Nectar. The KISS mattress uses latex and HD transition polyfoam, so it would also be a different feel than the Nectar.
If you’re looking for a few different options, you certainly can take a look at the members of the site in post #21 here. Many of them offer high-quality memory foam offerings. In addition to the online members of the site listed in the previous membership link … post #12 here has some of the better online memory foam options if you are looking for a memory foam mattress. The “simplified choice” mattress category is constantly growing, and there are currently over 100 choices in this segment.
If you find anything else that I haven’t listed or referenced, please let me know and I’ll do my best to provide some information on the item for you.
Phoenix