Yeah, One Piece is my current favorite anime. Where an anime like DBZ can push back story to focus on the fighting, or where others try to delve too deep and make meaning in a story where there is none and end up with a jumbled melodramatic mess, One Piece keeps it's focus and balance. It's about adventure pure and simple. The story and fighting both have their place and are well done, but it's that sense of the Straw Hat crew seeking adventure, and...well it's going to sound corny if I keep saying things like that lol. The good thing is that it keeps getting better and better. Where a lot of animes and mangas start out strong and run out of stamina over time, One Piece is 500+ manga's strong (and only half way over) and still getting better.
I'd recommend the series to anyone that likes animes in that action adventure vein. The only thing I won't recommend is the US dubs. I heard they redid them so I can't speak on the newer ones. However the older ones were among the worst bad dub offenders I've seen.
Like actually drawing over Sanji's cigarettes with lollipops, and then making it part of his personality that he's a candy freak. Editing out Crocodile's cigar and making it look like he just likes to have a huge ass teeth baring grin for no reason. Or cutting out a huge ass party showing what a fun loving guy Shanks is, and instead ending the episode with him staring Mihawk down like a villain. Stuff like that, plus the voice cast was awful, and the dialogue was butchered. It's actually what put me off of One Piece at first thinking it was a bad show, it wasn't until I saw ppl liking it on here that I gave it another chance and ended up loving it.