Well, I am quite happy with my 930 battery life, but two-three days - really guys?
As I leave my home in the morning (0700) with 90-100%, with average usage (all sync on) before night (2200) I have around 40%, not less. With hard daily usage maybe less, but two days looks too much for me, not talking about 3... Maybe with battery saver on then I not using phone it would be possible... Maybe you are using phone just like a phone? Not like smartphone with all of its advantages?
I am on preview ring .456