I chose this model based on the dimensions of the base. I wanted a high cat tree but I find most bases are too small in proportion to height. I bought this for my 10-year old 11-pound boy who recently lost his sister to cancer. He loves it! This cat tree is quite stable. It's only slightly shaky when my cat goes to the top shelf. Took my husband 10 minutes to assemble. We did not use the small cylinder at the top as it seemed slightly small, but I can easily imagine kittens having an absolute field day with that part. We've placed it near the window where our Mitz can look outside. Right now he's sitting on top of the little cabin, but he actually swings in the pouch often and also goes inside the condo. An excellent purchase, far less expensive than in all my local stores!