Two cents worth...... yeah, I know, not much.
I equate the LED work lights to the LED Christmas tree lights. They have a lifetime warranty on the cute little LEDs, but no warranty, none, ziltch, nada, on the cheap chinese wiring or any circuit boards. It's not the LEDs that will fail, it's everthing around them.
I buy LEDs from Hong Kong. 3mm LEDs are $.99 a hundred plus postage and the gal I buy them from throws in the resistors for 12 volt applications. I send her twenty dollars cash to avoid exchange, customs hassles.