It has a lot of power, space and has better battery life than the Motorola Droid and the iphone. It also has a lot of spiffy features and has the convenience of the android system. It has an HD camcorder and photos are awesome using the flash and the 8+ megapixel (I think) camera. Movies are also awesome with the larger screen. The phone is also very thin and has that sexy look.
I will say this: I tested this with my friends' iphone 3GS and iphone4 downloading the same three websites, one after the other at the same time, using the same ATT 3G service in the area (three different spots, but we had to use 3G to be fair to the iphone 3GS) and it won/completed the download with almost a full minute ahead. My friends' internet connection were already on and I even had to connect first too and the phone still proved faster. Almost all my friends have an iphone so this was one way to be different. (one had a Samsung)
I would go as far as saying that before the eventual/inevitable reign of the dual core phones (like the Motorola Atrix), this may be one of the best. Love my phone! Had it for more than a month now and no issues so far. HTC has made a terrific product and they made me a fan.