Recently my cousin bought a One X AT&T Dual-Core version. As Hesab bro said,everything is super cool on the phone. Camera,Gorgeous Screen,Beats Audio,Performance,benchmarks,web browsing,pinch zoom i mean everything. What i observed is that the dual-core version works somewhat better than a Quad-Core version. N i have to disagree with Hesab bro that Sense is buggy that causes LW to stutter,its not sense,its Tegra 3's drivers are not properly optimized. I have used One X Dual-Core for an hour or so and never caught even slight glitch or stutter when using a live wallpaper. Its cuz Qualcomm and HTC came up with better drivers to optimize the Sense perfectly. My Sensation with Sense 3.6 runs butter smooth now cuz Qualcomm provided better drivers for their S3 chipset n it runs much better with ICS. But over all One X is the best Android phone right now followed by both LG 4X HD or Galaxy S3.