Overall a great tree.  It is stable and the platform and round "nests " are a good size for our cats.  If you have a very large cat the nests may be a bit small but our cats are of average size and it works well for them.  They are able to run up it and claw it without tipping or wobbling.  We did have a bit of trouble with the threads on the one post but eventually got it to screw on.  I would suggest the company prescrew each piece before packing to ensure ease of assembly.   Also the underside of the platforms are not carpeted as the tower we already had is.  Although not catastrophic, disappointing and could be a concern for some.  You won't see this unless you are looking up at the tower.  We personally wanted more sisal so I wrapped some of the other poles myself.   All in all I think it's one of the better ones out there at this price point with the additional bonus of being made in the USA.