Personally - I wouldn't go to a convertable car seat. We just bought the Britax Regent for our 5 year old, and we love love love it! Watch this youtube video for information on boosters vs 5 point harness car seats. http://www.youtube.com/watch?v=azgBhZfcqaQ If this link doesn't work, go to youtube and search for "5 point car seat" and select the first one that comes up - by kcmillerfamily. It is a very informative video. We just ordered our BRITAX REGENT from Target.com. The Britax Regent is normally - $279 + or -, but it was on sale for $179 and Target.com had a special for free shipping on orders over $50. This seat is so much easier to connect to our latch system that her old seat, and she says that it is very comfortable. The Regent is good as a 5 point harness seat w/ latch system up to 80 lbs. Don't be misled by most car seats that say 60, 65 or 80 lbs.......in the small print they usually say "40 lbs as a 5 pt harness, then converts to a booster to 80 lbs". We had an Eddie Bauer seat, and loved it too, but it was only good up to 40 lbs and was supposed to convert to a booster which I won't do based on the above video. When we first got the E.B seat, I sprayed it with Scotch Guard, I took it apart and washed it many many times over the last 4 years and it still looks as good today as the day that I took it out of the box. The Britax seat says that it is stain resistant - but I sprayed it with Scotch Guard just the same. We travel a lot for my husband's business - so often times we find ourselves eating in the car. So far so good, everything has just wiped out and it still looks perfect! (to the other poster - disappointed with the Eddie Bauer seat that she has - Scotch Guard EVERYTHING - stroller, car seat, booster, you name it! Everything of my daughter's has just been passed on to my niece who had a baby - and she comments all the time that each thing that I have taken to her looks like it just came out of the box! Good luck!