So I am a freelance web designer/developer and have been using a 20" imac 2.16 c2d for the past 8 months with zero problems whatsoever - things have been running flawlessly. I am now about to sell my imac to get a new MPB, but am somewhat leary of doing so. I really want the portability, but I am a bit worried because this will be my only machine and if I experience any issues with it, and it's out of service, my business may suffer. Ugh... not sure about it...