My oldest is about 37 lbs now, so I anticipate having to get her a booster for DH's car soon. It will be either a TB or a BG. (Someone posted on another board that BRU may be clearanceing BGs so I may pick one up soon. )I would prefer the BG since she is outboard, but for those with the BG do you think the lock-offs will make it more difficult to buckle her in? Since my almost 2 year old is outgrowing the RA rfing, I think I will put her in the FF in the Next Step in the center (since it is narrower than both the FPSE and RA) and have the FPSE RFing in the other outboard position. Having the NS in the middle should free up a little room for the BG/TB...