I can't make a call on which is 'better'. I can offer my opinion on what I am going to do ( and have done with the beta). I have run 32 bit XP pro prior, and 32 bit Vista right now. If I go to Win7 when it's release (and I did this with the beta also), I'm going to 64bit, it just feels like it's the right time, for me, to make the switch......