[nudetayne]

I use them all, but predominately Windows for my actual coding and then I deploy to a Debian development server that mimics my production settings with debugging enabled. I don't enjoy the OS X GUI and always find it clunky. Cost of Apple products also dissuades me significantly. I can more than afford their products, but I can't justify it because I can build what I feel is a better machine for significantly less. Linux is great, but no Photoshop and I always find myself tinkering with it (though this isn't a bad thing, just not time efficient).

Ultimately, I find I'm more productive in a Windows environment, and that's what counts for me.