Display
The biggest selling point of the HTC Desire HD is that massive, stunning screen. At 4.3-inches and 480x800 WVGA resolution, it beats most other smartphones. The resolution in iPhone may be higher resolution at 640x960 pixels and Apple calls that as Retina Display. It displays more pixels than the eye can see, which we have to struggle to see pixels in WVGA resolution.
Size
HTC Desire is shines at 3,7 inches, having 480 X 800 WVGA resolution and Touch-sensitive screen with pinch-to-zoom capability
60mm 11.9mm
Processor
The HTC Desire HD takes the well-known and respected Qualcomm Snapdragon QSD8255 1GHz processor which handles everything lot better.
Sound and vision
The HTC Desire HD also features DLNA, allowing you to share your media with your DLNA-enabled entertainment system, whether that's your PC, NAS or speakers. Many phones are offering this now and it's pleasing to see HTC is embracing the technology.
The addition of Dolby pushes the Desire HD in front and with the ultimate mobile cinematic experience on that massive screen, so it's a double thumbs up.
Camera
The HTC Desire HD features an impressive 8-megapixel camera with dual LED flash and autofocus.The Apple iPhone 4 features a 5-megapixel camera with flash and tap to focus.
These are the main reasons I find HTC Desire very fascinating and eye catching. I hope I will get it soon.