Best - IA (most choices with consequences hands down)
2nd best - SW (very entertaining, doesnt take itself too seriously)
Worst - propably Trooper. After chapter 1 (which isn't bad in itself) there pretty much is no story. Just some (very) loosely connected missions.
2nd worst - Consular (ZERO choices with consequences, sometimes story even actually retcons your dark side choices)
I really loved my Trooper's story, but I found the Jedi's to be really REALLY good as well.