Something not qualified numerically about LED or CFL lamps, but a moderate consideration for me is analog FM radio interference ("RFI"). In one of the smallest

Something not qualified numerically about LED or CFL lamps, but a moderate consideration for me is analog FM radio interference ("RFI"). In one of the smallest rooms of my house, there are two of the Philips LED bulbs of the "yellow when off" variety. In an adjoining area there is another bulb of the same type. There is audible RFI with the room's lights on when the battery-powered FM radio (with a rod antenna, about 3 feet from one of the bulbs) is accurately tuned in to a favorite but moderately distant (perhaps 30 miles), moderately powered (6 KW, not a lot) FM station. Moving the rod antenna away can stop the RFI, but then the antenna happens to block a doorway. Turning off the lighting stops the RFI. The lamp in the adjoining room is apparently distant enough not to interfere with the FM radio. I wonder if the CREE bulbs are any better in this regard, but not seeing anything in the teardown pictures that looks like shielding or ferrite chokes makes means I'll probably keep the existing bulbs; the RFI isn't bad enough.