Longtime reader who is making the jump to a MacBook...just sold my Dell XPS M1730...own an iPad 2, iPhone 4. I would like a desktop replacement, but I am not a heavy user. I just would like something that would last 3-5 years and not have to worry about limitations. My two questions are what about a MacBook Air? The other question is what about this overheating issue...is it blown out of proportion? Money is not an issue...just want a solid investment...looking at 2.3ghz i7 8gb RAM 256 SSD Hi-Res Glossy screen...thx in advance!