I'm going to be purchasing a new iMac soon, and I've been set on the 20" model, but recently I've started considering the 17". I can get the 17" with the same specs, but ONLY a smaller LCD for $300 less. Since I've been used to a 12" iBook LCD for the past 3 years, any change in LCD size is an improvement. But I was wondering if anyone has some insight on whether the larger 20" is really worth it. Btw, I use the computer mainly for Internet and email, programming/web design, and some gaming.