Getting first Android device soon!

After 2 years with my iPhone 4, I can't stand it anymore and I'm going to get an HTC One X on AT&T. If you had to choose between the white or gray One X, which one would you choose? I like the white color better, but I'm not going to use a case and I'm worried that the white color will turn dirty and ugly over time.

Also, any general tips on using Android? I'm excited!