Don't do it.
If you primarily use PCs, a Mac will be useless. You will end up using VirtualPC almost all the time and it will be slow. All that crap about Macs is not true, my powerbook crashed all the time, it was annoying. Virus... not many for mac, but how many have you had on your PCs? Software compatibility issues, yes... lots. Look up programs you use and see if it's available on Mac, if it's not Photoshop then probably not! Yes, they can get bogged down like any other computer.
I've used PCs all of my life and could not get used to my powerbook, I ended up running VirtualPC on it 90% of the time and pretty much using it as a wireless monitor for my PCs using vnc.
You can get a lot more computer for the price as well.
To prove how much Macs suck... watch when DRTY quotes this and can't even get my name to show up properly!
