Everbody rather drifted off from the orginal question - does ArchiCAD 8 work better on the Mac or the PC.
I use both, a 2.3GHZ HP Vectra at work and a 1GHZ G4 Mac at home. Archicad environment is much better on the PC, with the toolbar & desktop surface features that the Mac version doesn't have. The number of times I've looked for the Intersect button on the Mac is in the 1000's, about the same number of times I've accidently clicked out of AC because of accidently clicking on some desktop object. The selected box highlights much better on the PC version, too.
Speed is another matter, the Mac beats the pants off the PC in 3D redraw, even more so after switching to the Panther OS. The Vectra has a 32MB NVidia graphics card vs the 64MB NVidia on the Mac - probably affects the comparison some, but is typical of quality - all componenets on the Mac are always the best available at the time.
The Mac wins hands down plotting and connecting peripherals (scanners, trackball, network). The Mac has been smooth sailing, but the HP is a nightmare with each piece of hardware added.
As for other day to day use, they are about the same. MSOffice works the same, although OfficeX for the Mac jumped past the PC version. Web browsing is dead even, and our Dreamweaver MX web software works better on the Mac.
So, I guess if you can afford the price difference, I'd say the Mac would be my current selection. In the late 1990's, it would have been the PC. I think Apple putting a Mac GUI over a UNIX kernel was a brilliant idea, and we've only seen the beginning. We've also noticed that since 1981, we replace our PC's every 3 years, yet the Mac's (counting the Apple II) run about 5 years between replacement.
Now, if Graphisoft will just fix the Mac version of AC....
RJ Dial
Pleasanton, CA
ArchiCAD8
1GIG G4, OS10.3.1
2.3 HP Vectra 2000Pro