We have one, I think it is the little tikes one posted in the original thread. It's fine for my girls (ages 20 months and 5.75 years) but it is just for play and is used indoors in our finished basement. For an 18 month old it is perfect because it can be set so low. For an older kid who seriously likes to play basketball, it would be too childish/small. DD1 is in no way a serious athlete/basketball player; instead, she likes to try crazy throws from the mini trampoline or backwards and stuff like that, and it is fine for that. We don't even have it weighted.
Mom to a spirited, red-headed, former 28-weeker 10/2009 and a more mellow monkey 12/2013.