I personally would buy the second one if it's covered in carpet (as it appears to be). My cats don't scratch sisal but LOVE carpet. I currently have a cat tree from armarkat, one of my cat does nothing with it, the other one does lay on one of the platforms. It's a really expensive bed lol. I will only buy carpet covered ones from now on. The carpet might not last as long as sisal, not sure. my cats would not lay IN any of the tunnels (they don't lay in the little house on the armarkat either), but they would lay on the half circle things or at least the top one.