[citation][nom]blazorthon[/nom]An 8GB drive could probably do it quite well... A 16GB or 32GB, both available for under $25-30 at newegg, can probably do it very well and hold plenty of data at the same time. A 64GB drive would be overkill unless you needed to store several dozen GB of data on the drive. Most people probably don't need to do something like that for a mobile PE-like sort of thing.[/citation]
Well, I just installed a 30GB SSD I had sitting around and after installing Win 7 Home Premium I had just under 2 Gigs left. Seeing that you never want to completely fill the drive, plus the usual cache from surfing and a few basic applications like Firefox, etc and 30GB is clearly not enough. Next step up would be 64GB as I've never seen anything inbetween 32 and 64.