How to buy dimmable LED bulbs that won't hum, flicker or buzz

If you're shopping for LEDs, there are many options to choose from -- and dimmer compatibility only complicates matters. Even if you pick the proper color temperature, lumens rating and a desired beam angle, you might run into another snag: dimmers. In many cases, your existing incandescent dimmers won't play nicely with newer LED bulbs. Unlike incandescents, all of which dim indiscriminately, LEDs either dim or they don't.