we have this one for our oldest http://www.toysrus.com/product/index.js ... Id=4097426
If you can, a 5 point harness is the safest as long as they are within the weight/height limits for their carseat. Our son outgrew his britax and at the time we couldn't afford one that had a higher weight range so we got that. I swear our youngest is so tiny she'll be in a 5 point when she goes to junior high, she's 2 and has 12 more pounds till we can turn her around.
Anyways, we he liked that one the best, plus it's sorta cushiony at the head part so when he falls asleep his head doesn't look like it's gonna snap. We have a cheaper one for the truck that's awful.