First off, I went ahead and bought the new 12" powerbook with superdrive and 24 hours later, I think it might be the best purchase I have ever made. I love everything about it. Anyway, I run protools and simply want to know if I should shell out the extra $200+ in order to add a gig of ram to this thing or just settle for 512mb + 256 built in? Also, where is the cheapest place to get ram. Crucial.com looks pretty solid, but there has to be cheaper places for a gig stick of ram. THanks!