The 3gs can be 2x faster, although I dont exactly find my 3g slow. There is no video camera on the 3g installed, however there is an app called ivideocamera that will let you record video (very limited compared to 3gs but completely fine just for shooting small video clips). The 3gs also has something called voice control, i'm guessing this allows you to say a command for the phone to perform, not something I would use anyway. The only other thing is the memory, the 3gs has at least double the amount of storage memory of the standard iphone 3g.