My Rev.A 12" PowerBook is starting to feel it's age. It might have 1.12GB of RAM - darn the soldered base RAM or I could have gone further ! - and the ageing G4 867Mhz of processor might not cut it in the PC world, but for OSX it's actually quite good.
However, the new 15" models are really quite sweet... One of those with the faster 100GB HDD, 128MB of Video RAM and a full 2GB complement would be a real powerhouse.
While I'd love to try out VirtualPC and see how much it would be improved in that environment it can only be good (everything else on my 12" is actually fast enough) so just got to make sure it would fit in my satchel (I've finally found a carry bag that's comfortable !)