Being a lefty I cannot say which I would buy because we are left out of TC's line of weapons BUT I got friends with both and they love them both. I (if I were a righty) would choose the hawkens for the look and feel. The firestorm reminds me of cheap wal mart guns. You can't go wrong with TC though!!
TC flint and great shooting are mutually exclusive.
The perc., is first rate, their flintlocks have been improved but still aren't what an L&R's or custom gun lock's performance would be. Lots of folks love their brand name guns. I venture to guess that they have never experienced the joy of a properly made flint lock. Far faster and far more surefire with substantially fewer problems.