Niterider and PDW.
Just a shout out for both on good customer service. My lumina 650 stopped working and niterider was quick to issue a return slip and had it back to me in about a week. My PDW spaceship light began turning itself on randomly and after a couple of emails I was able to stop by their shop and exchange it out. The new one now has 3 led's instead of the single and costs a little more. No charge to me and I found out they are very interested in getting their products back when something fails so they can work on improvements.