Ive bought this one for my primary requirement of MS-ActiveSync in a bigger screen and A-GPS. I dont find iPhone offering value for money with its smaller screen and I found the Pinch-in to zoom functionality to be poorer in it. Lumia-800 performs better than iPhone. And now, Im happy reading my emails and following A-GPS in a bigger screen :-)
Apart from these, I love the apps; especially the camscanner & Barcode scanner.. quite useful for me...