Almost all of mine are spiral quickstart CFLs from Commercial Electric. 14W --> 900 lumen @ 3300K. Nobody can tell the difference from normal light bulbs. Home Depot has 6-packs of them for $10.

My favorites are the R30 floods- no more heat rays of death beaming down on you! Unfortunately I cannot find PAR30 form factor for my swivel floods, even on line.

Any CFLs with globes or other treatments often have lower light output- the light is still from the spiral element, but the outer globe absorbs some. I'm not ready to swallow $5 per for most of those- I have a lot of 25W vanity-type bulbs to replace!