I use a 100W Halogen light over my vise and work benches at work. The more light the better. I used to get headaches when working under lower output lights and when I went to the 100W halogen, no more headaches.
I find magnifiers between me and my work annoying. I do wear glasses though, one pair for reading and everyday and another stronger pair for work/tying. The only time I need more magnification is when doing tiny flies (#28 or so), or when I really want to see the fine details in my work or flies. In these cases, I use a head mounted loupe.