Quoted from sanctumwear:Ebay link
This looks like a good supplier for the panels. US seller with a bunch of different styles for reasonable prices. I bought a red 15 LED panel for AC/DC and it lights up the whole building.
Thanks for all your info, links and pix. They look really good at a great price. I'm going to get a few of the 6-LED panels to experiment with. Maybe wire a couple of them to flashers on my SM in addition to a steady one.