The more powerful e-bike light appeals to me, however I do have multiple bikes, not all electric, that I sometimes use. So I'd like a package that's easy to move between bikes.

I settled for the Taz 1200 by Light & Motion. I've read some bad reports of battery failure, but they also have a 2 year warranty, which is pretty stellar, so hopefully it won't be an issue. I hope that for much of my ride I'll be able to run it in the medium mode and just kick it up when I'm going downhill and really cranking it.