Hi burntsienna,
I’m glad you were able to determine the issue and find a solution to your problem.
I’m sorry the tufting in the Avocado doesn’t agree with you. It is a good way to secure mattress materials together and the dips do tend to flatten a bit over time.
Keeping track of the individual mattresses or their specs that the retailers and manufacturers in the hundreds of forum lists throughout the forum carry or have available online would be a bigger job than anyone could keep up with in a constantly changing market, but you may wish to look online and use the experience and expertise of the members listed in post #21 here who are all very experienced and knowledgeable and some have hybrid options included in the choices there and I believe that all of them compete well with the best in the industry in terms of their quality, value, service, and transparency. At a quick glance, mattresses.net, BayBed.com. My Green Mattress, Flexus, Luma Sleep, and Nest Bedding all offer pocketed spring mattresses using latex on top.
Phoenix