I only have the second type installed in my gauges
I only have the second type I linked installed in my gauges, rather than the ones that resemble bulbs. Also in my door courtesy light fixtures. They put out a soft, bright, white light rather than the sleepy yellow of incandescent bulbs. Much nicer. I also have White faced gauges but anyway these LEDs are a vast improvement over incandescent.
Also, if you're interested in improved speedo lighting, you can buy those LED strip lights in any autostore and do this: (by the way, my FP gauge can be seen in the first photo. That is NOT the LEDs.)