For a 60lb 9yr old. His mom is insisting that since he's 9, he doesn't need a seat anymore. He's 9, but that's the only criteria he meets for ditching the booster. He isn't of weight or height (I think he's almost there though, 54 or 55 inches, something like that). I don't know for sure. It just bugs me that she lets him ride around in her car with the shoulder belt behind his back b/c it doesn't fit right. :thumbsdown: I'm on a tighter budget this year, and I'd like to get him a booster as a gift. (He rides in one in my car and says he likes it. seems to prefer it actually) I think at his height/age a NBB would be best b/c his younger sister is harnessed in a Nautilus so she won't be needing the seat as a hand me down. I was looking at the Evenflo Big Kid Amp, the Harmony Literider, the backless Turbobooster and someone else suggested the Cosco Ambassador. I like the look of the literider, but I think he might be uncomfortable in it, as it doesn't really have any arm rests. What are the pros/cons of each seat?