I think I've hit on why I think One Piece is good so far, but haven't actually hugely enjoyed it (apart from having the OP stuck in my head for nearly three weeks straight). I guess the problem for me is that although it tells what's ostensibly a continuous story, the actual arcs are quite long considering they're not very closely tied together very strongly at the moment. If it was more episodic I think I might be getting more out of it, or if the story was less arc-based. As it is, it has a very similar pacing and feel to Yakitate!! Japan, without the limited run or laugh-a-minute approach.
Combining that problem with the fact that I know the final crew lineup, I also can't believe in any of the peril until the crew is finally assembled. With hindsight stuff like Bleach looks fairly predictable, but I had no idea where the story was going until I got there.
So... I guess I sort of agree that Bleach has poorer quality (in the anime, at least - the manga has some absolutely fantastic parts) but I still found the story more engaging by this point.
THIS HAS BEEN AN EPISODE FORTY RETROSPECTIVE. We shall see where this goes for me.
- Pips