It's strange. Of the many CFLs I've installed, I've only had three failures. Two of which were early Walmart bulbs that were shit. The other was one of the bulbs I settled on for everything else, it got a smoky smell and discolored the plastic near one end of the tube: clearly some magic blue smoke escaped. Other than that, I've had 10 years of reliable service from a couple dozen bulbs. A few of the oldest ones (4 bulbs) have a "warm up" time where they are noticeably dim when you turn them on at first, but all of the other bulbs come on at or near their full brightness.
I do have underground power though, I wonder if comes out cleaner thanks to that?