I have one of the older 2 wheel version that the handle has been sticking badly for the last year or so. I bought one of the 4 wheel models, and it's ok for my 4 year kid (who likes to lay on top of it and roll from one side of the room to the other), but a little small for me.

I think I'll be taking back the sticking handle one as soon as I get back to the US. Hopefully they still have them.

The wheels look nice on this one.