Best Games for DS WiFi?

I just recently got a wireless router and got my DS online. Which DS games that have WiFi provide a satisfying experience for online play? I already have MP:Hunters, and MarioKart DS.

I need suggestions!! Thx!!

Mario Kart DS is the best (are you have it?). Animal Crossing DS, and Poke'Mon Dimond/Pearl are good Online games.

Take Zelda: PH by the way. :)