I got this for my 2 cats about a month ago and I couldn't have been happier with my purchase!  It took them a few days to warm up to it, but now they each have their respective perches for bird watching.  I was surprised how easy it was to put together (maybe 20 minutes max) and how sturdy it is.  It holds my 15 lb cat and 12 lb cat no problem, and when they jump off from the top, it barely moves.  After hours of researching, I'm happy I purchased this cat tree. I highly recommend this!