Have some daylight GU10s in the kitchen bought from LED Hut in June 2015 (not sure on the branding of those ones, possibly "Lumilife"?) Must get at least 5-6 hours use/day and all 3 are still going strong (of course now I've posted this, they'll all fail at once tonight).
Unfortunately, several of the other bulbs from the same order (dimmable e14 golf balls) have failed, as have their replacements - all the same issue, start off flickering and then after a day or so just die completely.
It may be something to do with the dimming, as we've changed the dimmer fitting* to a normal switch, and no more seem to have gone since.
* Yes we had one of the proper (very expensive!!) Varilight LED dimmers