We've used ours pretty frequently. Havent had any troubles with it other than it doesnt go in the grass very well (we were at a track meet going to watch them throw javelin). Other than that no problems. Im not sure how big my son is........my guess would be about 35 lbs and I think he is 36 inches tall. He seems fine in it and we havent had an issue with the recline either.
The only thing I dont like is the sunshade isnt very big, but we are getting a rayshade and that should eliminate that. The basket isnt big either, but guess you cant have everything.
I didnt like the combi..........they just seemed flimsy to me but that is just my opinion.