So i am looking at getting the Air, i am constantly on the move from school to work to home and other places. I rarely do 'heavy' computing(which i have a home pc for.) I don't play video games, i don't download much at all, the most i would put the laptop through is running photoshop or garageband, running window office programs, surfing the net and streaming videos once in a while. i was looking at getting the 1.8ghz Air with a ssd. Does this sound right for me or does another Mac sound better for me? If you recommend the Air should i go with a RevA or RevB?