[HTC HD2]
Many people find this device is a legend. It is a perfect specimen of glass, plastic and metal. Its 480x800 multitouch display bordered by just a few millimeters of ink-black trim and a subtle row of satisfyingly pressable little buttons. It is thinner than iPhone, which is pretty impressive and a plus for Windows mobile devices. It looks like a beautiful device in pictures, but I was simply shocked when I finally got it in hand; it's just twice in size as I thought it would be and far too thin.
[HTC HD]
HD has a large 3.8" display but HD2 even larger - 4.3". I mostly carry my device in pocket, which is simply impossible for HD2 and you have to either carry it in hand or in belt (clipped). Other than that, HD2 is a brilliant device, you will simply love it.