Summary: First off, when I received the handset I thought it was absolutely beautiful. It looks great and the screen is fantastic and so responsive. BUT, I noticed that the signal strength kept fluctuating between 0 bars to three bars (I have an O2 sim card, which in my area always shows full strength on my cheapy Nokia handset) so it was pretty much useless to use as a phone. I can only presume there is a design flaw in the handset.
Summary: This is a superb piece of hardware which is seriously let down by the operating system. Don't buy this phone if you want to be able to sync your contacts, calendar, tasks and notes from your PC to the phone. Don't buy this phone if you want to be able to copy files from your PC to the phone. Don't buy this phone if you don't want to be limited to buying applications only from the windows marketplace.