Well, it's whatever Pokemon are on your wants list really.
If you're gonna make a thread make sure it's in the trade corner and to read the rules. Phione can't breed iirc? \:
lol actually they can (just bred my first one. reason why I tried was because on bulbapedia's page on phione says on it's trivia section that phione can breed not only from manaphy but also from another phione.)
EDIT: drat beat me to it toujors xD