I fairly liked all of these, however the one that turned me on was Dialga because of it's gludius maximus :3. Jk. But, Dialga is a beast, and when you compare there signature moves, Dialga's has more attacking power, but 5 less accuracy points, when Palkia the pinkish has 50 attack points down, but 5 more accuracy points and it doesn't need to recharge (or fart) like Dialga does all the time when using the move. Basically, if you compare the stats, they are basically the same, but Dialga has a more diverse moveset and is more helpful throughout the game. Plus *says this in country accent* Dialga really turns me on :P