Getting a 2.6 15" MBP. Want maxed RAM and 7200rpm HD. Money not a factor. Two questions: In brands/types of RAM, are there better ones than others? If I want top performance from my RAM what is my best option? I've heard Corsair is good... are they all the same? Whats the largest 7200rpm HD I can get? 160GB from apple seems small for my needs. But if I buy and install my own HD do I void the warranty? Don't think I'd want to do that since I'll be buying apple care and want them to fix things that break.