Thanks for all the great info. I'm hoping it's fairly stable as that would likely be my top reason for switching. My Windows buddies give me a hard time about how much more it costs, but honestly, if it saves me a few hours a week in not having to re-boot or fight with unexpected problems, it will pay for itself in no time... and I'll be less stressed

As for the problem with copying, I may have found a solution. Obviously I can't try it, as I don't yet have my iMac, but the program "Ultracopier" looks somewhat promising.