And I posted that I recently tried some 24 LED panels with the larger 5630 LEDs. They put out as much, if not more, light than the 921s they replaced. While they run cooler, you need to make sure you're really saving amps.
A 921 bulb draws 1.4A.
Each 5630 LED draws 150mA. So Twenty-four of the buggers pull about 1.8A, if my math is correct.
Picking a panel that uses 3528 or 5050 based LEDs can consume less amps but produce less light.
I like the 5630 based panels - they really light up the coach. But they're not saving me power.