Last night I purchased the base 15" rMBP from the Apple Store. Right after I got home, I was fiddling around on the Apple Store website and realized that I can custom order a 2.6GHz i7 in place of the base 2.3GHz, for only $100. I could have sworn the upgraded CPU was only available with the $2800 model, but I guess I was wrong. I use my computer for general productivity, light-weight coding and gaming (GW2, SC2, LoL, WoW, Skyrim, all in Bootcamp). In your opinion, is it worth adding $100 and custom ordering the "better" model?