Trade in a PS3 60 now towards a Wii or closer to April for DSi?

[BTFeather55]

Game Stop is giving $200.00 in in store credit for PS3 60 gig b/c models according to a clerk that I spoke to there. I am wanting to get a Wii or DS or DSi. Should Itrade in my PS3 for a Wii now or wait a month and get a DSi?