Radbot 1000 FTW. There are several in pictures already in this thread -- and it was the most recommended when I posted about 2 months ago asking about a bright rear light.

http://www.ridepdw.com/goods/lights/...%E2%84%A2-1000



I have mine mounted onto the rear rack on the proper tab (axiom) and it allows some "bending" to angle the light properly. If it's angled too high I have had drivers let me know about it. Many cyclsits have commented about how bright this thing is also. It's probably the brightest damn light I've seen on the road, but the PB super is pretty good as well.

Long term -- I'm not sure. It's been rained on twice without issue...so we'll see.