So since 1984 I have owned a Mac 128k, a 512k upgraded to 2M, a Mac IIx, a Mac IIfx, Mac IIsi, a Quadro 700, a 660AV, a PM8100, PM9600, G3 beige, G3 B&W, G4 450, G4 2x1.4GHz, G5 quad and lately some Mac Pros. Plus some stuff I have forgotten.
But yet again I have had to go out and order a Windows laptop. Last time it was because Apple was dragging its feet doing a 17in screen, and Sony had a very nice Vaio. This time it's because they cannot get their act together and produce a decent multi-core laptop with a good GPU. So I have gone for Kobalt, who will do a core i7-720/820/920 with Nvidia 285M in various screen sizes. Apple are just not meeting my needs any more. And I am not hanging around for anything less than quad core.
So Apple, I am giving up on you again. Please try to remember that for some of us a "Mobile Computing Device" does need to actually do some serious computing, and we need mobile power more than yet another fashion accessory. I will make the same decision for my next big PC, dumping the Mac Pro, unless it has room for a good clutch of GPUs, power to match and Blu-Ray support.

Er, Anyone hacked Snow Leopard onto a Quad core laptop?