Yep, same here, it's a great improvement from the 4. For all the 4S whiners the phone wasn't aimed at you. Apple aims them at the people with 2 year old iphones cause the standard US contract is two years (we all know they are US-centric). People with the 4 said the same thing about your 4S.
I agree. I have a 4S. I'll see if I can hold out for the iP6, otherwise, I may have to upgrade when the 5S comes out. I'm definitely passing on the 5.