LED's produce a lot of heat at higher "wattages". IE: the 75w+ equivalents can throw out some heat. And if its recessed in a can or upside down on a chandelier but with a decorative covering, they will often go out due to heat. Hell I have seen some with giant heatsinks on them to try and compensate.
I had a series of 150w LED's i was burning through. Eventually I moved to just replace the bulb and fixture with a ceiling light like this
LED's are also sensitive to dirty power, probably more-so than Incandescents. I have run through some because of surges and brownouts as well.
I generally use Phillips brand LED bulbs if it helps, but do have some others.
Finally, the lower wattage bulbs (ie: 10-15w equivalent) will sometimes have a "pulse" to it. Dimmer LED's also tend to do this, and you often have to tune the dimmer switch to a higher brightness for "low" to compensate.
All that said, they are still leaps and bounds better.