As I said...
"It depends on how you use it." I really don't see how that statement earned a -1.
My needs are my needs, not necessarily yours. I've made two different iMacs last an average of 6 years each and they met my minimum needs, though even the iMac Extreme was a very fast machine at the time it was new (technology has significantly surpassed it today). It's still as fast as it was, but my needs have grown and for me, the Mac Pro is the better choice--though I may still settle for an iMac instead when I do replace this one.
Windows boxes? Never in my experience have I seen one last more than three years without needing service. Even when I built my own and spent nearly as much as I did for my iMac at the time, I needed to replace a power supply, a video card and in one case the CPU itself while that iMac kept churning along.
No, I don't believe anybody will ever talk me into replacing my Macs with PCs, but I'm not opposed to putting a PC beside my Macs. What I'm more likely to do is replace my iMacs with Mac Pros because they simply fit my needs better.
