Hi cool nice to see some HTC fans. I'm using a Desire S. Thought of Incredible S but Gingerbread coupled with the aluminium unibody swayed me in the way of the Desire S. Sensation was just announced but not available for sale when I got the Desire S in late April.
With regards to the HTC Sensation I would advise folks to not go for it as later this year HTC will be releasing 2 new devices with NFC technology coupled with 4G LTE roughly of the same price as the Sensation. Processor speeds, Cores, RAM, Video, will all be same if not better. There is also a chance that they may be bundled with Ice Cream Sandwich which would be awesome. But NFC is going to be amazing since the tech may come into banks and airports soon. Plus sharing between devices is gonna become so easy.