With a QE capable video card and plenty of memory, they actually run Leo pretty well. Heck, I've run it on a 400mhz Sawtooth with 1.25gb RAM and a Radeon 7000 AGP and couldn't complain about the performance over Tiger.

FWIW, I think most of the slowdown is in the Dock/Finder with the former being much more graphics intensive.

With a dual 500mhz and nVidia card, it should be very nice.

JR