3G iPhone or Windows Mobile 7?

I have been reading so much about all the news on the 3G iPhone and have been really considering getting it when it comes out. But I have had the samsung blackjack for a long time now and have really gotten use to windows mobile 5 then 6. and i love my zune and the differnet things have been going on with that and hoping that microsoft links them together windows mobile and zune. And wanted to get some thoughts on this topic. Should I get the 3G iPhone or should i wait for a new phone with windows mobile 7? Thanks for you time