I've been completely happy with my 60W Cree bulbs. I've not been so pleased with the 100W ones. While the light is great, they've not been reliable for me. I just lost my 2nd 100W bulb in my utility room. 1st one conked out in a day, 2nd one lasted a few months, went to turn it on yesterday and it just flickered for awhile, then shut off entirely and is now completely dead. I'll be going with Philips for any 100W needs, at least for the near future.