I just went over to the cd board to see what they said, and I have the myride and if it helps your decision, My 4 yr old, who is in the 95% for heigth and 50% for weight
could fit in the myride REARFACING. When I tried her in it FF she still has quite a few inches or 25-30 lbs before she would outgrow it. So if you got the myride Im sure you would be able to use it until at least age 4 maybe longer. It's 40lb rearfacing, and 65lb FFing. It doesnt go to booster though.
Let us know what you decide to do.
by the way here she is trying it out RFing you can see she is long legged.