I AM on the market for a new bike light, but sadly not for myself. This will be quite an upgrade for my wife, replacing her old MJ-808. Amazingly the old Geomangear battery packs are still going, and we'll probably play with running the MS helmet mounted on low, not for illumination as much as getting the attention of drivers at intersections etc..
I will definitely be borrowing it for some night rides as well, but she's the one commuting daily and riding early on weekends. I'm excited to get my hands on this light and find out if everything we've heard about it is true. If so, it will be hard to consider anything else for a while.
-Jeremy