Joe,
I have three or four in the house and try to not use those lights if I can help it. I've not found any trial of the various kinds of dimmers to see if some are less noisy than others and I think I made Cutty Sark Sailor guffaw enough that he spilled his, well, Cutty Sark, when I asked if some were better than others. All are pretty sucky for those sensitive receivers listening for lightning hundreds of miles away. Of course so are some motors, neighbors' flat screens, and welders down the street at legitimate businesses.
I happen to live out in the country, and while the majority of the time have control over what is in my wiring and when things are turned on, it still isn't nirvana out here. I keep telling my wife that we don't usually do any of the mood lighting; when we have company over, we are all old enough to need the full light that bulbs give off. But I will admit that if I could find a good dimmer setup, with full house control and zero noise, I would go for the Star Trek (Alexa?) voice command to Computer to dim the lights and so on. Some of the low voltage control circuits in high priced new-home systems are very nice, but I don't know of anyone who has tested them. The only thing one sees is the FCC approved and I know for sure that isn't even true any more. A stop light on one of our main drags has a left turn arrow which blinks and sets off my pager and my 2m/440 Kenwood very time I'm within a few hundred yards. Nothing the city will do about it, of course.
Good luck on the dimmers. Consider a good old switch in place of them where you can. Thank goodness Bug Zappers have gone out of fashion.