Hi, I am buying a 17" MBP and need some advice on the configuration. I've used the search function and trawled Google, but can't find a definitive answer. I am opting to upgrade the RAM myself, so shall leave that as stock. I have decided to spend the $48 for the faster hard drive. My big question concerns the CPU. I am not a "power user". However, I do tend to have a bunch of programs running at the same time, and keep tons of tabs open in my browser. It's not video rendering, but several word processing programs, iTunes, browser, Adium, all at once. The only gaming I plan to do on the computer will be WoW level. Battery life is not so important to me as I tend to stay plugged in. Is the reduction drastically significant with each chip? Heat! I have a 17" MBP 2,1 and the heat is crazy. Is the difference in processor heat scorching? The biggest factor is how long I keep my computers. This will be my main computer for the next 4-5 years. Future proofing is my major concern. Lack of hyper threading, for example. So... i5 2.33 i7 2.66 i7 2.8 Which is it? (I can't wait for the MBP update, as I am buying this in the US, and the UK will have crazy tax after Jan 1st) Thanks.