I don't know why, but I was kind of disappointed with most if not all of them. Opinions on the Espada
:
Yammy just felt like a big blundering fool. Although he wasn't afraid to beat up lolis, which was cool, but then again he did beat up lolis, which is evil.
Aaroniero was all talk and a pushover.
Szayel was interesting, but like Mayuri stated, when he started talking about perfection, I was through with him.
Zommari was just there, there was nothing special about him, and his boasts about him being the fastest lowered my opinion of him.
Grimmjow made for some good fights and had some good moments, but I felt he was overrated.
Nnoitra's fight was actually entertaining for me, but his arrogance kept getting annoying as well as his open boasts about having the hardest skin.
Ulquiorra is highly overrated in my opinion. I just don't see why he is so popular. I never once thought he was the strongest one. And I'm not afraid to say it: I'm disappointed at his release, but I'll wait and see what happens...
Halibel, well, like ShaggyJebus, I just haven't seen enough of her to have an opinion, sure she's hot, but I'll see if her character develops. I do hope she kicks Hitsugayas ass though(another highly overrated character).
Barragan looks and seems like a badass, I like his take charge attitude and I hope he isn't a pushover (even if his fraccion were pansies).
Stark is the type of character I happen to like so I hope things develop with him, although he has been done so many times before.
If the top three Espada get beaten, there had better be a damn good reason for it.
Regardless of what I think its still interesting so I'll continue to read and see what happens.
I don't really have a favorite, I'm still undecided.