Vivillons are perfect!
Long story.
When the games first came out and I tried to complete my collection the only place I could find the rarer patterns was on GTS.
I got extremely upset because I thought it was greedy to be asking for Legends for Pokemon that can be bred.
I decided to so something. I also decided unless the other person really didn't want to trade me Vivillons, the trade would be Vivillon for Vivillon.
Oooh, I don't like this April's Fool prank!
I now have something like 13 copies of the games each started with my DS set for a different region.
I also have a NA DS, European DS and Japanese DS as a result.
Yeah, I got REAL upset.