I like the size of the round perches since cats like to form themselves into a comfortable ball shape & these perches will be just fine for that.  I wish the carpeting used was a little more dense but since I don't have my cats yet that I will be adopting, they probably won't care..LOL....I also like the height of the cat tree since a lot of cats like to get high above you...the weight of the tree is also something I liked...it won't tip over like a lightweight tree could