Saetha said:
...Is Mustang still awesome in it?
I would say he's quite a bit MORE awesome. He was one of my favourite characters on the show.
Basically, Brotherhood kind of assumes you've seen the original series since it moves a lot more quickly at the beginning. It does kind of suffer for this, but I found the overall end product to be quite a bit better. I liked the majority of the characters more in Brotherhood. The cast does get a little too big at times, but I didn't think anyone was uninteresting.
Also, if you liked the voice actor (English dub) for Pride from the original, you'll be happy to know that he reclaims his role as Fuhrer. It's been a while since I watched them both, but I'm pretty sure there were several other voice actor returns, his just stood out the most to me since it was probably my favourite English dub performance out of any anime I've seen (though I don't know if that counts for much since I've seen very few anime).
I might be a tad biased since I watched Brotherhood first and just about everyone on the internet says to do it in the reverse order. I know a lot of people say that a certain death doesn't carry as much weight in Brotherhood, and while that's true, it's certainly not trivial. When I first saw it, I was quite sad. The character had been one of my favourites and had seemed like such an all around great guy.
Sometimes people harp on the show for not focusing on the brothers enough. That might actually be true since my favourite characters were Mustang, Greed (sort of.....), and Wrath.
Anyway, both are great. I personally prefer Brotherhood, but I wouldn't fault anyone for liking the original more.