I've been waiting months for the refresh, so now I must decide: 12" or 15" ? What I do: Programming, writing, some design work, and then the usual internet stuff including web surfing, email, etc. Also, I'll more than likely use VirtualPC on occasion. Reasons for 12: I live in a city, so the 12 seems like it would be comfortable to pull out in various situations like cafes and parks and such. Seems ideal for pulling out in the cities tiny places to work. Reasons for 15: Nice fat screen. Not much heavier than 12, but my main concern is the form factor. Plus extra perks like the lighted keyboard (which will probably just be novelty really.) Suggestions? Experiences?