I really want to buy the iPod nano. Ever since I've considered an Ipod, I've been stuck between shuffle and the mini. I didn't want to pay more for space, and I wanted a screen. The nano is perfect AND with photo capabilities etc. Is there a downside that I'm blind to? This all seems to good to be true! Would the price go down the day after I buy it? Should I go for 2 or 4 GB?