I have three types of lighting in my shop. High pressure sodium, HID and T-8 fixtures.
In my opinion the 4' T-8 fixtures would be the best bang for the buck.
Available at wally world for under 15 bucks they are efficient and bright. I spaced them at 6' apart length and width and have plenty of light for most jobs. Bulbs are cheap if you buy them by the case.
You can hang them from the included chains or screw through the back.