L.L.
My son was the same way, always 95th percentile. Since he was about 11 months old we have him in the Safety 1st Alpha Omega Elite. It's great. He loves it. I just bought another one for my ten month old. The only downside I found out is that after 40 pounds when you convert them to the booster, the study showed the seabelt doesn't lay where it should across the shoulders and pelvis. So, long story short, it's a great, safe seat for rear and forward facing but you'll need to buy a new booster when the time comes. Hope this helps even a little bit.