I put up a 48x81x15 building 2 years ago, farm-electrician recommeded 8 regular incadecent bulbs, 4 on a switch. Lights up the building well and cheaply, if I'm working on something or over the workbench I run a seperate light anyhow, the machine will shade out overhead lights anyhow.
I hear good things of the more expensive, more light for a true machine shop of the T5 fluresents. If this is your 8 hour a day job or serious serious hobby, then spring for those, they come in regular for a shorter height ceiling, or high-bay for a tall ceiling, many options, you'll shell out some real money to get them in, if you run them 10-12 hours a day every day they will pay yuou back in savings.
I think LED muight be the future, but we aren't there quite yet.
I've got a stockpile of regular incadecents on a shelf ]in the basement, the curly bulbs work very well in some caswes but are horrible in others; the T-5 setups are great if you can afford them.
Regualr incadesants are a good bang for the buck for most of us light hobby folk that need enough light to see what you're doing in a building, but use spot lights to light up most of the work anyhow on the couple days a month we need to work. Probably getting hard to find 100watts by now, but stock up on the smaller sizes this year, and I think the specialty 300wall and etc might be around for several more years?
--->Paul