I'm not your regular guy, I'm 6'-5 and weigh a good 240 lbs. My shoulders too are overly broad. We bought a Jamison Latex a couple years ago after trying the mattresses at the store. And we haven't had a night's sleep ever since. While at the store, I've been mainly worried if the foam mattress would sag under my weight or get huge dips in the place where I sleep every night. Then I would get no support under me. I talked this over with the salesperson and we finally selected a Jamison no-flip latex mattress that had also a natural latex comfort layer on top. It cost us a bit less than the other Jamison models, though.
I was happy that it suited me perfectly and was very comfortable. That lasted hardly a week when I started feeling restless in the bed. So my wife, who is just 100 plus pounds at 5'-0, and I changed sides to see if it worked. We have been doing that every week, apart from rotating the bed monthly. While all that seemed to help, it was only less and less so by each day. One year into the mattress purchase, things were turning out too bad and I called the store. While at the time of buying the mattress, the salesperson had have me believe that the bed was good to give me support for many years, the store now said latex mattresses developing minor body impressions was a very normal thing. They also said comfort issues were not covered by warranty. By the way, they mentioned that there was a new regulation that mattresses needed to have new fire-retardant batting or lining, which eventually found to be affecting the performance of the latex. They still came over to my place to check on the bed, take measurements of the body impressions. But they told us these were not all that deep to be covered under warranty.
I kept up the calls to the store and finally they said they are informing Jamison about my complaints. That way they gave me some false hopes and bought time. Meanwhile this mattress has been going bad to worse each day and I haven't had proper sleep for a long time now. Of course, my wife had no problems and she liked the bed, but that I think is because she's hardly half my weight and so doesn't quite "sink" into the mattress.
You know it when I tell you that having a fight with my wife and ending up sleeping on the eight year old raggedy sofa is really a great relief, much more comfortable than this less than two years old mattress.