I'm hardly for stupid laws like ones banning incandescent bulbs, but I have made every light in my house CF. Some of them seem to have pretty good light quality. But they all save money on electricity and seldom need to be replaced. Beware off-brands, however: I bought three bulbs for a ceiling fixture, and it wasn't three months before I noticed two of them had burned out. I replaced them with GE bulbs, and a couple of years later I had one burn out.
Otherwise known as... didn't work. Did I mention color temperature?
Try replacing elipsoidal bulbs in angled cans in a 25 foot ceiling. Then there's the huge investment some folks have made in low voltage halogens.
When I can get equivalent or better in fluorescents I'll start using them. For now, they're fine for my basement porcelains and that's about it.