I visited a nearby corporate store just now and they had one hooked up all alone with Beats speakers. With all the wired cable hook ups, it looked like it was on life support!
Wow I'm really impressed. From my limited demo time, I have to agree with Varsity's impressions. ICS is the first time Android has lured me but it's the industrial design of this phone that has pushed me off the fence. The screen is just sublime; the best I've seen. The unibody polycarb shell is nicely shaped with the screen tapering off to meet it. I've been using a HTC Titan since Nov so I'm no stranger to HTC's SLCD, screen size, and form factor. Even though they are similar in size, they are vastly different in feel and weight. The Titan's painted aluminum shell feels quite slippery vs. the One X's grippier matte white back. Also, the One X's design seem to make it feel narrower side-to-side, especially gripping the glossy sides. Finally the Titan feels like a porker vs the One X.
Not many phones can pull off white just right but the iPhone 4/s and the One X are cream of the crop. The One X certainly makes the Lumia 900 White look like Miss Piggy with its full glossy body and saturated AMOLED screen. One thing that surprised me was that the camera didn't protrude out ads much as pics indicate.
It's a superb phone. I'm looking forward using Android for the next 6 months before settling down with one platform (already used iPhone 4/iOS 1yr and HTC Titan/Windows Phone 5mos).