I've been waiting to upgrade to a high end iMac when LightPeak arrives on those machines, and with the newest MBPs, I expect Thunderbolt will be on the iMacs at the next revision. Still, it's almost six years old, and I've been dreading the day when I hear the bang and see the liquid coolant leaking out of the CPUs.
It's perfectly speedy, particularly with older apps, since much of the newer stuff isn't available on PPC machines anyway. Also, although I have a MBP for work and business travel (plus a PBG4 that I can use when I travel light), I still retain a PMG5 as my main desktop home machine, with lots of external FireWire storage. As I've noted in threads on this Board, I've been a longtime satisfied user of Quicken for Mac.
