Well I'd like to do some minor gaming, but its mainly for Web/Graphic Design. I think i might just get an iMac, I already have a pc and its decent. But am gonna wait for the new ones to come in to see what the specs are, Im def gonna go for the cheapest one because they are far too overpriced, I can get cheaper ram and add it myself :]...
Then get the iMac. I use the machines in my sig for graphic design and illustration and they are more than fast enough for these tasks. 500 mb .psd files open almost instantly. It won't matter if your project files open in 3 seconds or 2 seconds.