Bleach is honestly my favorite. Then naruto is a quick second. I've never watched one piece but im sure its good also. Bleach is just more of the style i like.
I only read, I don't watch. And to be fair I gave up on Naruto long ago so IDK if it got better or worse. OP the characters are just so freaking awesome, they totally stand out. And the stories/messages are a lot better IMO than Bleach which is just "Oh Ichigo is so pwnsome please save us!" every single time. Ngl Tite Kubo has really fabulous art, it's always so clean and well done. So props to him.
Naruto because it's still on going and doesn't suck.
Bleach 2nd. unfortunately the fillers were god awefull and instead of ending the series with the epic ending with Aizen they just had to squeeze as much money as they could and made the complete pile of dung that followed after. At least after that they recouped a little.. but still they botched the story pretty bad.
One piece 3rd because every episode you have to wait 4mins50secs - 5mins to even start. Longest intro and recap ever. You get about 7-15mins of actual story depending on the episode. The pace of the story is sooooooooo slow, soooo many flash backs it's painful and then to have a 2+min recap of it every episode ughhhhhh The only reason they are able to go on for so long is because they stretch every single second and then recap it and then have full length episodes revisiting it... as much as I b!tch I still follow the series though ;p
I tried watching Naruto from the middle but half the episodes were flashbacks and Sakura crying, so I got really bored lol. I'm reading the manga and I like it so far.
Bleach. Naruto started strong imo but got crappy after a while, and I never really got into OP. I like Bleach mostly for character designs/dynamics and I just like Japanese shit a lot.
I pick Bleach.
Bleach has gotten more packed with action lately and I like the drawings and the characters. Besides, its story is told more through pictures than through text. and Less reading, which makes it easier to the mind.
Naruto has too much emotional play going on and I get a bit bored with it. I'm the type that just want to see cool fights and actions.
One Piece has gotten crappier with its storyline unlike previous years where the storyline was simple and straightforward. and it is hard to tell who is depicted stronger, who is less stronger, I got confused with the strength of the characters. And the scenes are all everywhere, I get confused sometimes.