My tuning setup is in my garage. Not as cold as outside, but cold enough that during the winter, it can take a while for the fluorescent fixtures to warm up. And of course, the light quality isn't top notch -- LED or halogen seems like it would be a lot better.
I'm thinking about replacing the fluorescent fixture hanging above the workbench with something better. But I can't decide what. I don't care about aesthetics. I care about lighting quantity and quality, cost-effectiveness, and ability to work in cooler temps.