Is your child still in an infant seat? Sometimes it makes a big difference if you put them into a convertible carseat rear-facing. It can be less reclined, and it doesn't feel as much like a "baby seat". What is your budget like? Most forward facing only seats are not really that great. Most of them have low top slots, so your child outgrows it before they are ready for a booster. And most of them make poor boosters as well. If you would like to try rear-facing in a convertible seat, here are some options...
The First Years True Fit - about $200 - it rear-faces till 35 lbs and then forward-faces till 65 lbs. It has pretty tall top slots (about 17ish inches).
Evenflo Triumph - about $150 - it rear-faces till 30 lbs and then forward faces till 47 lbs. It has pretty tall top slots(I think about 17 inches).
Cosco Scenera - about $70 - it rear-faces till 30 lbs and then forward faces till 40 lbs. It has decent top slots (I think about 15 inches). It is not very padded, but it works fairly well.
If you are not going to go the rear-facing route, here are some combination seats that you could try...
Evenflo Traditions - about $120 - doesn't make the greatest booster, but it is adequate. It goes to 47 lbs with a harness and then 100 as a booster.
Evenflo Generations - about $140 - makes a better booster than the Traditions, though still not the greatest. 47 lbs with a harness and 100 as a booster.
I think if I were you I would get a convertible seat, so you could at least try rear-facing, and if it doesn't work, then go forward-facing. The True Fit or Triumph seats last the average child till about 5 or 6 years old, and after that you could go with a dedicated booster if your child is ready. HTH!