About to order a 15" MBP with 4gb ram and 256ssd that much is decided. But I still don't know whether to order the '09 2.8ghz machine or the new i5 or i7? I have experience with the '09 2.8 ghz models, we have a few of them in use in our office. I don't have much experience with the new i5 / i7 machines, except I've bought one so far for my production manager but he left on a business trip the day after he received it. The only comments I heard from him so far is that "it gets pretty toasty on his lap compared to his last year or two old 15" MBP. So we're having a hard time deciding what to order, we're looking to order two more 15's so I'd like to make the right decision and not have to go through the hassle of returns. Price is not a concern. Good battery life, low heat and fan noise is a concern. Will be heavily used daily for: - technical design drawing, no CAD - video and photo editing - email - web surfing - writing - movie downloads, Slingbox, hulu, netflix etc Will be used 'everywhere' desk, lap, coffee shop, travel ... this is why battery life and the coolest running machine of the three is important.