We have been experimenting with LED lights for a long time. In the home, I have used fluorescent and CCrane LED light bulbs.
For the RV, we have purchased LED lights from many sources around the world. Most are adequate for accent lighting or lights that you occasionally use. Most are either not bright enough or are too focused to be of regular daily use.
Then we found a new one called the Sensibulb from Sailor Solutions. Although pricey at $39.95 a bulb, it is amazing. The second version of this light just came out a few weeks ago. The light is warm and easily replaces both incandescent and halogen light bulbs. Various adapters allow it to fit different lights and a dimmer switch is also available. It runs on 0.16 amps, less than 1 watt. So replacing your most commonly used lights will save you a ton of power. Perfect for boondocking or solar power. They were designed with the boating market in mind and unveiled at the 2007 Miami Boat Show but they are also perfect for the RV market as well.