There are some awesome ones like Darkrai, Gliscor, Leafeon, Glaceon, Vaporeon (the other Eeveelutions were better before I think, although Vaporeon is awesome in both sprites), Infernape, Dialga, Palkia, Regigigas, Arceus, the Shinx family, Roserade.
The best when comparing with DP is maybe Darkrai's.
However, Snorlax, Hippowdon (Hippopotas is cute), the Marrill family, Bibarel, Roselia, Gligar, Shellos/Gastrodon, Floatzel, were much better before...
Snorlax and Hippowdon are the worst, they looked great in DP, and now...