I don't care for D/P all that much. Every now and then I'll come across an episode that interests me (mostly concerning Dawn, or a contest), but for the main part I think it's gone a little down hill.
In Kanto and Johto Ash was all immature and head-strong, but in D/P (and AG too) he became this wise-like trainer guy. Meh, it just wasn't the same to me. I liked it better when they got themselves into things by stuff Ash said and all, not by choice. The story lines are also getting a little old, just a little repetitive from the ones before. And my final peeve is the animation. Now, the animation itself is good, but just at certain times Ash seems a little stiff. I know that isn't major, but it does annoy me a little. And then theres the voices, but I try to watch it in SUB's anyway, so I can't hold that against them.
Don't get me wrong, I still really like the anime, I just think it's gone downhill some. :3