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I work maintaining a 50 computer network evenly split between MACs and PCs. I've done this for 14 years. The PCs need replacing every two years, the MACs have a useful life of 3 to 4 years. The MACs essentially require no maintenance, the PCs need careful attention or they devolve with adware, spyware and other malicious worms and viruses. We needed both systems because some of our older proprietary accounting software is not available on MAC. Recently we've found a very good balance with the Intel iMac. We are running Parallels/XP for the accounting and leaving all email and web based activity to the MAC. Nice balance and everyone wins. To us it's cheaper to spend time in production then in IT work. As far as MACs being dumber - please, real world business technology requires simplicity and a user friendly atmosphere not hoards of IT twits running around thinking they are gifted because they know the secret handshake.