I could've go for the Xperia X10 but judging from the specs, the Satio seems better although its running on Symbian OS instead of the almighty Android.
What i like is the 12MP camera that comes with auto focus, image stabilizer, face detection, red-eye reduction, smile detection, xenon flash and video light! I needed a new camera anyway after my old Cybershot sort of "dieded"
This upgrade is considered a huge leap compared to the phone im using now: