Below is a link to a write up I just did the ADV rider on my LED headlight install and results.
http://advrider.com/forums/showthread.php?p=25484131#post25484131 (http://advrider.com/forums/showthread.php?p=25484131#post25484131)
I finally got around to getting the Cyclops ones. I already had the auxiliaries from the same company, so I am confident that the added cost would be worth it. I wanted them more to save watts. After I had everything buttoned up, I did a 12 minute tune. With the aux lights on, my voltage stayed in the green at idle. Even when the fan kicked on. A bonus is that they are crazy bright and are actually white.
http://www.cyclopsadventuresports.com/3800-Lumen-H4-LED-Headlight-bulb-_p_83.html (http://www.cyclopsadventuresports.com/3800-Lumen-H4-LED-Headlight-bulb-_p_83.html)