I don't currently have a smartphone, so I don't know how fast webpages load on an iPhone 4 on AT&T, nor how fast they load on a 4G Sprint Android device. I've read the specs. I know how much faster AT&Ts network will be for the 4S IN THEORY, but in practice, what will the real difference be? It seems as though streaming Netflix and Pandora will be my most-used data usage. If those things will load without a huge buffering time, would there really be an advantage to going with AT&T over Sprint? What kind of real speed differences are we talking about? I don't plan on using the phone for tethering or anything like that.