We've had this almost a week and so far it seems great! Construction appears to be very good - sturdy, carpeted on bottom, ample space for curling up on top.
My kitty takes awhile to warm up to new things but I think he's going to really like it once he gets used to it. 
He is very strong and the traditional arched brush on a small base just didn't work for him. This one really seems like it should be much better!