If you're interested in the Evenflo Triumph 65, you might want to consider the Evenflo Momentum as well. Babies R Us has 2 versions of the Momentum, one with Evenflo's SureLATCH (which make the seat easy to install, but isn't always compatible with a car's lower anchors) and one with the push-on/alligator style LATCH. I believe that the shell might be a little taller on the Momentum than the Triumph, but I think it otherwise has the same limits as the Triumph 65 (40 pounds rear-facing/65 forward-facing), though I'm not sure about the harness height, either. I also believe that the Momentum doesn't have the knobs that sometimes can be irritating on the Triumph.
I have a My Ride, and I really like it rear-facing (haven't used it forward-facing yet, though it seems like it installs really reclined in a lot of cars, which doesn't bother me, because I need it for the RFing weight limit). Easy to install, easy to use. My son did think it was cramped compared to his Radian on a long car trip that we took, but other than that, he seems to like it.