I would say Naruto has lost it's quality over the last year or two, especially with how long this arc has been. However the recent chapters have been very good so that's always a good sign. For me though after watching One Piece I'd say it is definitely the best right now maybe even best anime so far, like I'd even place it above DBZ which for me has always been untouchable by others haha.
I'd probably put AoT on a solid 3rd or 4th with Naruto being the other, although with the anime waiting for the second season and manga coming out only once a month it is hard to keep interest without forgetting what happened the month before etc...
Bleach used to be great but I stopped after the Aizen arc and just lost interest, I like Fairy Tail and I'd say it has better character development than Naruto but it also lacks sometimes with the conclusions of battles and stuff.
Most recently I've watched Magi and it has been absolutely just BEAST well the first season anyway, I haven't watched much of the second season but yeah very good anime and I assume manga too.