Has anyone purchased the iPhone 4 on Sprint? Curious as to how the user experience is? I would also be curious to know what phone you are coming from? Also curious as to why you chose the 4 instead of the 4S? I will be getting an iPhone on Sprint with my upgrade in November and am trying to decide whether or not to get the 4 or 4S to replace my EVO. I really like the A5 processor, the 8 megapixel camera and the 1080p video camera, but I am not completely sold on Siri.