I've only taken this headlamp on one weekend winter camping trip, but I've never had a better initial impression of a headlamp. I've owned four or five different LED headlamps, and this is by far the best. It's brighter, more versatile, and very durable. The Princeton Tec EOS arguably has a marginally more durable case, but this headlamp easily compensates through its variety of features and overall brightness.
The dimming ability is fantastic- infinite brightness settings! I basically used the big LED for hiking/backpacking on trails, used the 2 smaller LEDs while at camp (cooking, setting up the tent, etc.), and used the red LEDs for late night bathroom trips.
GREAT headlamp. Unequivocally the best I've ever used.

This is a good headlamp as I noted in an earlier review. It should be pointed out however that the flood mode (proximity mode) in this headlamp uses LEDs that draw 4 times the current of the spot mode.
I think it would be better to just not offer flood lighting if it's going to cost the user 4 times the battery power to do so.
The current draw when the flood mode is on high (25 lumens) is more than when the spot mode is on high at 100 lumens.
I'm mentioning this just because I see many people referring to and using the flood mode as a way to gain battery longevity. It makes sense. Save battery power by using the dimmer mode but in this case it doesn't work. It's using way more power.
To save battery power just use and dim the spot beam.
I would prefer that Black Diamond simply remove this (flood) option and add a sliding diffuser over the spot beam when diffused light is preferred.
Otherwise, this is a very good headlamp as described in my earlier review.

This is a very bright light for the money. I was glad to see Black Diamond improved the Storm by adding the water resistant o-ring. I am disappointed though. This is my second Black Diamond Storm in a year. The head straps on this model consistently loosens and had to be adjusted and tightened all the time. Also, where the screw inserts for replacing the batteries...the plastic case cracked. And, I was always careful not to tighten the screw too much as to prevent this very thing from happening. Yes, this is somewhat of a budget light for the lumens you get...but c'mon, I've used it for 2 months now, casually at that, and it's already broke. If you want a durable light that will last spend the extra $30-$40 on one with a harder case, better design.