For what it's worth.
I have been using the new florescent light bulbs lately and like them. In the table lamps in the living room, I had 75W regular bulbs. I tried the supposedly equal to 75W florescent light bulbs and with them side beside, I thought they were a little bit dimmer than the ordinary ones. Although the lumens on the package shows them brighter. I took them back and got the equal to 100W ones and they work just fine. If anything they may be a smidgen brighter than the regular 75W's.
I have them in the 2 lamps and the 5 recessed kitchen soffit lights so far. They are really good in the recessed because they run MUCH cooler. Every one of the 7 are replacing regular 75W's and they each pull only 25W so I'm saving 350W right there. Only problem is I have a lot of my lighting on dimmers and they can not be dimmed so I'm limited to their use..