I use them, they work great. I have had good luck with the GE bulb's, they seem to be built pretty good. I don't know what kind my are but they seem to come up to 90% right away.

They do put out a ton of light! In one fixture I used to have 3 60 watt normal bulbs. 3, 60 watt CF's were overpowering. So I put 40 watt CF's in insted.

That fixture alone went from using 180 watts, to probably about 30 with the CF's.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200