Adding my two cents. I agree that the GE Enbrighten, UltraPro and yes, Honeywell are all rebranded Jasco. I have retrofit LED lights and while they don't flicker they do HUM when dimmed which is also annoying. I've had to get used to just using the lights at 100% or listen to the hum. I've tried Zooz and Inovelli and have gotten the same results. There are two versions of Zooz though and it has to do compatibility of LEDs as @jtp10181 mentioned. So maybe the other ones will work. Though I think Zooz told me that their dimmers are incompatible with Feit LED lights. So I gave up.