We replaced almost all of our lights with the generation one Sensibulbs. They aren't cheap, but we tried several others (Dr. LED, Imtra and a couple of others) and nothing comes close to the Sensibulbs. The new generation is supposed to be even better.

In a few cases we replaced our dome lights with dual light domes and put both a red and a white bulb in.

In our case, however, we were cruising and on the hook most of the time - so for every amp hour we used from our batteries we had to put an amp hour back in. We saw our electrical usage plummet when we did the Sensibulb replacement. If you are on shore power most of the time I wouldn't bother changing out to LEDs (only for cost issues).