Talk me into/out of a beauty rest black

This whole subreddit is traumatizing. I was ready to pull the trigger on a Leesa Sapira Chill hybrid mattress but realized it was shorter than I wanted and then getting cold feet about not being able to try it. Then we went into a store over Labor Day and they had us lay on the sensor thing and pointed us into a beauty rest black (a little over 3k, I think it’s the CX series)

Then I read a couple reviews.. sags in a couple months, so uncomfortable, screw beautyrest… all the fun stuff to make you second guess a $3K purchase. So here I lay, on my 10 year old posturpedic euro/pillow whatever top with two nice valleys for my wife and I to roll into.

I need a new bed. I’m getting analysis paralysis. I laid on the mattress in the store. It seemed nice enough. WTF. Help.