S4.
HTC and battery life (especially on LTE?). 'Nuff said.
Plus, that ridiculously out of reach power/wake button... users beware one handed use. You will shuffle to reach it, and risk dropping it. The HTC One X was dreadfully cumbersome to wake/sleep. It's the only access point to the phone, and it's uncomfortable and hard as heck to use. Until HTC realizes that as phones get larger and the only way to access the phone should be easier to reach, I'm going to be turned off by HTC.
Not falling for the "it looks pretty" deal.