N.R.
We have an Evenflo Triumph in my minivan that was highly rated. It is very comfortable and has served us well. However, it only goes up to 40 lbs, so we will have to replace it fairly soon.
In my husband's car, we just recently bought an Eddie Bauer seat that has the 5 point harness (which we need now still), but will convert to a "booster" for use with the vehicle safety belts. It was relatively inexpensive and is working well so far. Also, this seat goes up to either 80 or 100 lbs (can't remember which right now), so it will be useful much longer than the Evenflo.