Syncing data to Iphone 4s

Hi.

I have two iOS devices. An iPod touch 2nd generation with iOS 4 and mostly games installed. And I own an Iphone 1 with iOS 3 and some apps.

I just ordered an iPhone 4s and I'm wondering how I can migrate or sync the data from both devices to the new iPhone 4s. I want to migrate the savegames and the data from the apps. Sometimes I have different versions of an app on both devices. How can I choose which version iTunes should sync to the new iPhone 4s? :confused: