I'm a fairly big Bleach fan, despite the series short comings, I find it to be a fun sereis with interesting stories & characters. given its drawn out at times...but i kind of like it when long running manga seriels move at a slower pace... less arcs means less clutter lol.
Only thing I wouldsay I dislike about bleach nowadays is how it seems part of its fans are only fans of it to bash it...that annoys me...and then theirs all the annoying one piece fanbrats that bug you for liking it more then one piece....ugg....the anime/manga fanbase in general is downright immature and annoying.
But getting back on topic.... yeah I enjoy bleach, my favorite characters are Rukia, Ichigo, soifon & Kenpachi. As for my favorite storyarc, hard to say they all kind of meld together in away but i do like the earlier volumes of bleach the best i guess.