I'm up for a new phone on T-Mobile and I'm set on purchasing a WP7 phone but I'm trying to figure out if I buy a HD7 right now for $0.01 from Microsoft or wait for the Mango handsets to come up in a few months. I have a Blackberry Pearl 8120 which just isn't cutting it for me and I'd like to get a new phone as soon as possible but I don't really want to repeat my mistake with my Pearl and buy a two year old phone again. So, my question to all you WP7 fans is are the added hardware specs for Mango handsets really going to make a difference or is the HD7 going to be good enough to last me two years?