Although I've been heavily critical of the S4, I think I'm leaning towards it at this point:
-Bigger screen (4.99" vs 4.7" for my EVO and the One)
-AMOLED seems to be improved over previous iterations
-Camera seems to be better in most situations from what little comparison we've seen
-It's something different. I've had the original EVO, then the 3D, then the LTE
-The form factor and finish are growing on me (reminds me of my old holographic pokemon cards... O
)
I'm waiting till both phones come out and in depth comparisons can be done. I did not have this luxury last year, although I don't regret going with my EVO LTE over the GSIII one bit. If the camera and battery life come through, then it'll be my next phone. I really do want something different.