BSOGF

Hey, I am going buy one of the DS pokemon games soon, and am not sure for the difference between Diamond/Pearl and was wondering which is better in terms of monsters, plot (/shrug), and, most importantly, the legendary pokemon.

Which legendaries/game specifics are better.

p.s: my friend has diamond, but if diamond is better, im simply going to get diamond too, but if i get pearl, then we can trade and stuff. i dought he'll trade Dialga or Palkia though.

which ones looks cooler should be the reason there both about the same stats wise