They look great and the price is great but there seems to be a very faint flicker on some of them. I installed 6 of them in an elevator and two of them flicker. You really need to look closely for a while to notice it but its there. At first I thought it was the transformed but its only two of the six, and they are all on the same 12VAC transformer. I will try with a 12VDC unit and see if that does anything. I will update you on how long they last.