King Koil orchid firm- input needed

Hi all,

I have been reading a lot in this forum over the past few days and it has been very helpful in my search for a new mattress. I have a very old mattress(unsure if it’s true age) that I need to replace as soon as possible as I just realized it is basically destroying my hips and back. I woke up Sunday and could barely walk due to this mattress having virtually no support left in it. It sags without even laying in the mattress. I’ve tried numerous mattresses over the past three days and I think I’ve narrowed my list down to a few. On my list are the stearns and foster estate firm with a euro top, king koil orchid firm (this felt like the best mattress I ever laid in), or one of a few shifrin that Macys was selling. Having said this, my main reason for posting was to ask if anyone had experience with the king koil orchid firm in comparison to either of the other mattresses I listed? I was wondering if this mattress is going to be durable enough that I do not have to worry about it breaking down quickly. (A lot of the reviews I see on mattresses on here is that they break down quicker than they should, especially ones with foam) any sagging issues would lead me right back into the situation I am currently in so I have tried to steer clear of anything with foam, but this is hard to do in todays mattress market. For reference my spec are 5’8- 173 and the gf about 5’7 135. Any help would be greatly appreciated. Thank you I’m advance!

The king koil mattress states it contains the following makeup:

15.5”

Fabric quilt Tailor made tufting Over 20 hand applied tufts 1 1/2” high performance foam New Zealand joma wool 1” plush high performance foam

Insert: 1” firm natural talalay latex

Comfort layer: 2000 glue free micro coils Natural cotton pad

Support system: 8” 792 contour flex encased coil system 13 3/4 coil gauge Foam based excellence edge foam encasement 1” 1.7 plant based firm foam