Okay my journey started out with the XA. Two of them with bad software. Best buy offers me an even exchange for a step up to the X. 4 days later to today, the X touch screen stops working on the bottom part. I'm on my way to best buy now as they have been nice and now have offered me at no charge extra to exchange it for the X Performance. I thought the X was great. I'm sure I'll like performance even better. Can anyone tell me what's wrong with Sony's software? Did I just by chance get 3 bad phones or is Sony known for software interface issues? Any help would be appreciated.