If you can get over the fact that Part I is frigging hard because the main character is utter fail *kicks Micaiah*, then yes, yes it's awesome.
The Parts system is a little strange at first, but once you "get" it, then it's fun. Plus you can save mid-battle, which is super useful for hard boss fights (or you're like me and can't stand to have people die on you).
Most (all?) of the characters from Path of Radiance are back and just as good as they were the first time around. Rolf got a little worse as a sniper but Shinon got a little better, so it balances out.
The supports kind of died tho. ): They're just one- or two-liners now (and yet somehow are still vaguely slashy?), but there are occasional Info conversations that are similar to supports, so it's not a huge loss.
Plus, there's an alternate ending available after you beat the game on Normal level once which is definitely worth it to get because you find out more about Ike's childhood (tho the bad dubbing of it made me wanna shoot myself -_-).
Overall, if you played and liked Path of Radiance, play Radiant Dawn. C:

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Marc could kiss her and hold her close and tell her it would all be okay.
Jackie didn’t see the troubled expression cross his face, notice the twitch of his hand toward his other wrist.
[link]

Simple. If you like Path of Radiance, play Radiant Dawn. Of course, it's not going anywhere, so if you don't want to dish out $50, just wait for a price drop.

I've got it on hold for $37, so money's no problem.

And yes, I loved PoR...Just hoping it's not...going to disappoint, you know?

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Help Organization XIII! xD [link]

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~Genuinely Anti-Yaoi/Yuri. Sue me. I'm Evil. >:

Alright then xD

So the alternate ending is not a lie! Awesome <3

Perhaps I shall. Hmm.

--
Help Organization XIII! xD [link]

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~Genuinely Anti-Yaoi/Yuri. Sue me. I'm Evil. >:

If you liked PoR, you should get it.