So... update on this post. On the advice of a few folks on here, I tried putting the GE LED back on a dimming circuit without any other bulbs. As postulated, without other bulbs on the circuit, it no longer hummed. I noted that both of the original bulbs I tested were brighter than I needed, and so in the interests of saving money and with the GE now maybe back in contention, I took a chance and bought three of the 10W GE bulbs from Sam's Club. I have one three-light circuit above our kitchen peninsula and I installed them there last night. A perfect result. These are the right intensity, the color is perfect. They don't orange-out when dimmed - really they hold their color temp, which isn't what I'm used to, but certainly couldn't be called a defect. If anything, the "oranging" is a peculiarity of incandescent. They dimmed quite well. I am rather satisfied, for $25/bulb. Provided nothing goes wrong in the next couple of days, I will replace the remaining six bulbs in the kitchen with these identical bulbs. The original two experimental bulbs will be moved to other locations in the house. Of course, the risk I take is that these somehow don't make it through years of use, as promised. But there's no way to tell that for now. Given the price, I'll be less upset if they do blow up than if I went with the Philips and they blew up. Who's to tell how that risk will pan out.