Who cares what the computer looks like? All that matters is what's inside it. I couldn't give a shit if my computer had fancy lights on it. They don't make it go any faster. It's sickening the number of people who want their computers to look cool, spend hundreds of dollars modding their cases, scrimp on the guts and then bitch about how they can't run the latest software.
Buying a computer for how it looks is completely retarded.
Photoshop on a PC is a million times better than a Mac. I was able to run Photoshop 5 on a Pentium 233 with 32MB of RAM faster than I could on an iMac 333 with 64MB. On my 3.0GHz P4, Photoshop loads in 5 seconds and the interface is identical to anything I've seen on the Mac version. In fact, the UI is better because I have more mouse buttons.