I read a lot of reviews of similar cat trees and this one impressed me the most by the number of great reviews and the price couldn't be beat!  I got this only a few days after bringing home our kitten from his foster home.  My kitten was all over, and under this during assembly (which I still say was easy to build).  He swiped both if the little mice off within the first 2 weeks, so I just keep reattaching various small toys to the strings that were left hanging.  He loves the scratching posts and does gymnastics to pull himself up to the very top perch.  

I ordered it in beige so that it wouldn't be too dark next to my chocolate brown couch and dark colored curtains.  The carpeting itself is very soft, and easy to clean.  It sits in front of a window and does not take up very much floor space while still keeping kitty busy, and cozy.