feel free bro, but you're buying into a dead os. microsoft has been trying to get into the cell phone os market since 2000 and has failed miserably time after time after time after time. nothing says they're not going to fail this time too. windows mobile was just recently discontinued. how many folks have you known in the last 11 years with a windows phone? that's how many you will know in the coming 10 years, too.
2014, possibly 2015, windows phone is no more, alternately just BARELY hanging on (because microsoft is willing to throw even more money at it just to save face)
mark my words. check back in this thread in three years (set an alarm in your outlook calendar or something so you remember)