Latex hybrid - looking for opinions

I posted this a few days ago in the Sleep EZ forum but still haven’t received a response so cross-posting here for feedback.

My partner and I recently tried out mattresses at our local store in Portland, OR. The mattress we liked best was a hybrid latex model manufactured by Sound Sleep in Sumner, WA. This mattress features a 1" medium Dunlop comfort layer on top, then a .9" medium foam layer, .5" gel memory foam layer, and .9"medium foam layer all over 968 quantum edge pocket coils. I couldn’t find any info on the density of the layers, and the salesperson did not know either.

We are looking for something medium firm. My partner is 5’5" and 185lbs and I am 5’6" and 135lbs. We are combo sleepers but mostly back. I didn’t love the all latex models we tried as I felt they were pushing my hips up and my back was not aligned. I am wondering hybrids with a thicker top layer will feel more like an all-latex model as the latex layer is thicker? Have you ever heard of anyone else having this issue where they feel their hips are not heavy enough to properly align? I really liked the latex feel otherwise.

Thank you!