least harmful light dimmer

Very helpful indeed. I will check out Lutron. Thanks everyone.

The advice that separate lines solves the problem is incorrect. Since all of the lines are tied together at the breaker box even if the dimmer is on the other hot phase they share a common neutral line so they are not isolated. I had a dimmer on the stove hood in my kitchen which caused my stereo to buzz in the basement and the stereo was on a different breaker. However, I do agree that modern dimmers are not a problem. I have one on almost every wall switch in my house as well as several lamps with built in dimmers and I have no noise.

When we create media rooms we always isolate the lines in a manner that eliminates line interference.

How do you do that?

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I use Lutron mainly also.There are some out there that make nasty RF interference.On the touch ones,be careful with strong cleaners.If you think you have a bad one (making noise)try a AM radio set off station.A portable one makes is easier.The dimmest setting is the noisiest in all the ones I have.I have two going bad now.The one is a bathroom is the easiest,its set to turn on dim at night,but goes up to full brightness now.Its loosing its memory like me.The other one is noisy and I can't find an AM radio around.The bad one is interfering with a few of the clocks that pickup the shortwave signal from Colorado.They sure make the bulbs last longer,especially nice on the hard to change ones.