Stopped by my HF today to pick up some sandpaper for my DA, and saw that they have an AutoDark helmet on sale....
Specs: item number 46092 solar powered darkness shade control: 9-13, clear 3/4 reaction time: 1/20,000 second
made by Western Safety
I picked one up, and I must say, going from a 'standard' helmet to an autodark helmet was a really nice change, and this one works great - you can even select the return to clear speed!
-- It has become appallingly obvious that our technology has exceeded our humanity. -Albert Einstein