I haven't posted here in a long while because I just haven't found any reason to! :-) We're still enjoying our mattress after all these years. If you want to find out which type I have, you can do a search to check out my history. Basically, after I tweaked it JUST the way we wanted it early on, it hasn't been touched since. I really am so glad I found the Omicron topper. It's true to its word--doesn't lose its shape or flatten. And, the Costco Cuddle Bed mattress topper gives it just enough softness to make for a perfect match for our backs and sides. And, the combination talalay latex, high density foam and LuraFlex springs inside the zippered mattress has been holding up quite nicely. All in all, I've been exceptionally pleased with our XL Twins (inside a King frame.) I want to give a HUGE shout out to Bay Bed and Mattress in Santa Cruz California! They've been in business for 20 years now and I hope they stay around for a long, long time!