Back and neck pain.

For a bit of context I am looking for a new bed and my first time shopping for a quality bed in 10yrs and wow has it become complicated. I am 6’7 and about 340lbs and am really struggling with finding something. I have been to several mattress stores and have tried a couple different beds I found nice but unsure of the price being worth it. Due to my height and weight I have been looking at Hybrid mattress in Cali King.

the mattress I have liked are

Sealy Posturepedic® Elite Hybrid High
Point II 14" Medium Mattress

Tempur-Pedic TEMPUR-LuxeBreeze®
Medium Hybrid 13" Mattress

Purple RestorePlus™ Cool Touch 13"
Hybrid Mattress

after to the costs of these beds I want something that is durable and comfortable that I can keep for a long time instead of needing to replace often. I don’t mind the costs but I don’t want to be overpaying for what I’m getting more than needed since most mattress are overpriced.