I have several trees from zooplus/bitiba of their brand Natural Paradise Premium, for almost 3 years now, and almost zero issues (I have a crazy muscle cat who managed to disassemble one part with his sprints, eg broke it when jumped on it and off it, so he's a destroyer, I even have holes in the wall when he uses wall as a spring - part had I think 11 nails, and no I cannot tear down the other part with my hands no matter how hard I try, so I can't imagine the force he made).
And another damage is one hanging mat was torn from the bottom, but that's my fault, we played with cats through the mat, and they grabbed toys and eventually pulled out some string, and then the main mission was to destroy that string so now we have a hole. Top part is still perfectly fine and used and I'm lazy to sew the hole.
Anyhow, plush parts are removable and washable. Beds are comfortable and used all the time.
However, they have 2 types, either sisal rope around the stem, or the sisal carpet.
Can't recall if they have anything different.
There are some really expensive custom made cat trees out there but I don't think I've ever seen one with just a carpet. However, maybe you can ask someone to make you one?
I forgot the link where I saw some, this google gave me now:
http://www.katzenbaum.ch/
https://www.goldtatze.ch/
Or maybe you can just buy carpet he might like and put it on some part? Zip ties on strategic positions and squeezed tight might work? Didn't try, I'm just guessing.