Randy,
I have been using them here in Japan for 3 years and a few of the bulbs were USA versions bought at Costco. I started using them in my USA home in MS in June. Some people claim that that vibration is a problem. To me the vibration causes (caused) more of a problem with filament bulbs as IMHO the fans tended to vibrate the hot filaments. My MS house would blow a bulb a month per fan/light. Name brand, expensive or cheap bulbs, didn't matter. In a discussion on a woodworking forum on the subject of regularly blown filament bulbs started by me back in early June - a few said that my problem was probably voltage. But it was not. The problem turned out to be the brand(s) of filament bulbs - for me. I change many of the bulbs out to fluorescent bulbs.
One huge advantage of the fluorescent bulbs has been the decrease of heat generated as well as electricity used, reducing the cooling needed in the summer. My electricity bill in Japan was reduced the equivalent of $75 a month in the summer. My daughter, who lives in my USA house says that this past summer's electric bill is less now since we went to fluorescent bulbs. - by about $30 a month. That was with one person's electricity usage this year versus for the same period the previous year.
About half the bulbs used in my MS home are now in ceiling fan lights. Same here in Japan also.
Watch out for one thing - what color light do you want? The original and the more cheaper fluorescent bulbs are the ones that emit a warm slightly yellowish- reddish color. I hate those. I get the cool white or daylight bulbs and they usually cost more. Some people don't like those as it tends to be too "blue-ish". In Japan, we have a third version readily available - between the two. That is what I use here.
At HD and Lowes, they probably will have only two colors but a specialty lighting store might have all three. One thing that I noticed here is that we have bulbs that are about $7.00 and those that are about $10.00 US equivalent. The $7.00 ones come on slower in winter - light up immediately but seem to be only about 50% in brightness and then get to 100% in about 60 seconds. The $10.00 ones do it a lot faster.
IN my Japanese home, I have 20 installed, 16 in fan/lights and have replaced 3 in 3 years. In my USA home, I have 16 installed, 8 in fan lights for 4 months now and none replaced instead of the average of one GE filament bulb per month per fan/light . It was not a voltage problem, as mentioned above in the first paragraph. It turned out that it was probably the GE bulbs.
For the reading on the GE bulbs (and others) read this link: http://www.bt3central.com/showthread.php?t=30425&highlight=fluorescent+bulbs. I think the fluorescent bulb usage is on page 2. There is a post by Slik Geek about 2/3rds down on page 1 about GE bulbs.
Just my opinions and experience. But no problems since using fluorescent bulbs.