I don't read manga, and only really watch the Anime through CN and maybe a little streaming from time to time, but to the point I am a long time Toonami guy, drawn in by DBZ and for a long time I was of the opinion that Bleach was my absolute favorite of the ones that i watched however I don't know if it is just recency bias (since I haven't seen a new (to me) Bleach in and minute) but am still enjoying unseen(again for me) episodes of Shipudden, Naruto may have moved into the top spot. I like how even though all long run manga's have power creep, it comes about more naturally in Naruto than the formulaic way it seems to in DBZ and Bleach. Just a personal opinion though.