I am an S2 shooter, happy with the S2 its all good but I can see improvement in the S3, just having a little difficulty justifying to myself I need it at the moment considering my shoots are few and far between.
But this is some quick things that an S2 shooter like myself would like in the S3.
Vertical Grip
123 Batteries gone, AA only now.
Dual sensors, one for highs one for lows. Essentially Dynamic Range increased and less noise. For a wedding shooter it will take care of washed out wedding dresses and noise in the blacks.
Back to the grind.
Glorified Unique Photo Counterboy