How tall is your DD?
I love our Recaro high back boosters, but I'm not impressed with the height limits on the Recaro convertible. I've also read that they don't allow much leg room rear facing, and because the shell isn't that tall, they are outgrown earlier rear facing than other convertibles.
We just bought a Graco MySize70 (also called the Size4Me or Headwise), which I'm really loving. It rear faces to 40 lbs with an adjustable head rest, so it should get DD2 to almost 4 years. DD1 is 51" and still fits (barely) in the seat forward facing.
We have also have a Sunshine Kids (now Diono) Radian, which is a good seat. We have the XTSL version that rear faces to 45 lbs, although DD2 will outgrow the limits by height long before that. There are 5 harness positions, which is nice because you're more likely to get a good fit. DD1 outgrew this seat around 5.5 years forward facing. (She's also 97th percentile for height.)
The First Years True Fit is another nice option. It rear faces to 35 lbs. DD2 was comfortably rfing in it with plenty of leg room at 2.5 years, 32.5 lbs, and almost 38". DD1 outgrew this seat at 4.5 years ffing, mostly due to her torso height.