Yes! Radiant Dawn is my favourite in the series! It's super long has loads of characters, and the Dawn Brigade section has mostly characters that suck so much that you have to use lots of strategy and teamwork within your party to keep everyone alive. Have you played any of the other games yet? Radiant Dawn I feel is not the easiest game in the series to start off with. Path of Radiance or the Sacred Stones are in my opinion the "beginner games" of the series. PoR because every character ever except Sothe is very good. Sacred Stones because you get Tower of Valni grinding if you're having trouble, and because worst comes to worst, Seth beats the game for you.
I might get Awakening... I just need to figure out whether I want to buy a 3DS yet...