I just went through this same dilemma. My 3 year, 3 week old godson is at 34lbs. and my 2 year, 11 month old grandson is about the same weight as well and both ride in a TFP in my vehicle. For the past couple of months, I've been torn up over the decision to buy another convertible with a higher RF limit to keep them RF or to just go ahead and turn them FF. Well, when I was able to get a Radian 80SL last week for $97, that made the decision much easier! The new seat will be delivered on Thursday and the boys will be in that seat and I will move my goddaughter (my godson's twin sister and a peanut, at only 27 lbs.) into the TFP and the MA70 that she is in right now will either be a spare seat or I may have a buyer for it. I just wasn't ready to turn them yet. My godson will likely be turned in his mother's car because I think she is fine with him FF. She briefly had him and his sister FF for about 3 weeks last year and then I convinced her to turn them back and they've been that way ever since. I just feel better keeping them RF in my vehicle. If they want to be turned when they are 4, I would probably be okay with it. Actually, my grandson has been FF for a few months now in his parents' vehicles. But as long as the boys are happy RF and still fit, I will leave them that way even when they are beyond 4!
