Yeah 86 and still kicking, not only are their lights bright, but their customer service just rocked my world. I bought the same tail light as you did: the Light and Motion Vis 180 and their cool Urban 800 head light.
I was playing with the tail light the other night and like a knucklehead, I tore the rubber cover off the switch, thinking I was trying to open the battery cover (wrong side, doh). It was a clear case of user damage, and I admitted as much in my email to them. To square it away, they told me to simply order a replacement light for free (they gave me a code). No questions asked; just send the injured one back to them within a couple of weeks.
In my estimation, these folks really know how to do customer service. Oh, and their lights kick ass too! Bright, rugged, waterproof, and well thought out. Buying from them is as satisfying as buying from Apple.
The only difference in my experience is that their stuff is made right here in the USA. In case you all haven't noticed, not much stuff is anymore, including Apple's of course. They build almost everything in China.
Light and Motion have just gained a customer for life here; too bad I am as old as dirt. (These lights will almost certainly last longer than I will.)