Re: GIMP is pretty good
If you're really dependant on Photoshop for your livelihood and don't want to run Windows, it's probably better to bite the bullet and get a Mac. I see a lot of those creative arty-farty designer people using Macs as their default daily driver OS anyway.
I'm not against Microsoft Windows per se; pick whichever OS you perceive to help you get the job done. But the recent trends of Windows is troubling. Microsoft needs to rethink its philosophy when it comes to Windows.