When i first watched bleach, i thought it was a so-so anime, but stuck with it because i heard it got better. What really sealed it for me was the soul-soc. arc, everything about it was great, but when it came to a close and the fillers started, I watched about half of them and then stopped watching bleach altogeather.
very mild obvious spoiler
Spoiler (highlight to view)
One thing that really annoyed me (not including my dislike of the filler arc in general) was that, after reading the manga first, they couldnt drastically change the storyline during the bount arc, they couldnt deviate from the manga, so none of the main characters could die nor could there be any character development. So basically after the arc finished, nothing had actually changed (with the exception of some annoying new characters). Every fight that happened, it was obvious who would survive because they are still alive in the manga.
Anyway, I did love bleach, but it looks like it's getting stuck in the DBZ trend. Maybe it will get better ^^