CP9 & Marinefored were amazing. I'm actually making an AMV on the Marineford Arc at the moment.
Unfortunately yes Naruto is just a bunch of filler, they get on the storyline for 10 - 15 episodes then we get a month or two of filler which is annoying as hell because right now in the anime Madara should be showing up and fighting the Kages but we won't see that till June because of stupid fucking fillers.
Also Punk Hazard has seemed boring to me, not like Skypia or Foxy Pirates boring but boring, pumped for Smoker vs Trafalgar Law though.
Yeah, Trafalgar and Smoker are keeping me somewhat interested in it or else I wouldn't care. Thriller Bark was pretty boring IMO also.
As for Fairy Tail, would I recommend it? I'll just say it's pretty fast paced compared to One Piece, like an enemy is like 5 episodes or something.
Also, the first 49 episodes are on YouTube.
According to IMBD it got 7.9/10
One Piece is 8.5/10
I watch another show which isn't really action but mystery called Detective Conan. That's 8.1/10