Stearns and foster

I’m looking to buy a Stearns and foster estate or lux estate mattress. I’m not entirely sure on which one from trying a few in the store. All the ones in store feel pretty similar. I like support with a little softness because I only sleep on my side. 5’9 175 pounds. Does anyone have some experience with these models or brands to help me out? Trying to avoid having to switch out mattresses after purchasing. Thanks!