I hope your happy with the DR headlamp, Mark_F, I think you will be. I also have a Petzl headlamp in my camping gear somewhere, and my son uses one as well, they are great. My choice of the DR headlamp was made on reliability and cost, roughly 2 DRs for what I paid for the Petzl some time ago. I found I sometimes need a headlamp, and I didn't want to worry about transferring it from day pack to back pack to my emergency gear, I really wanted several headlamps all at the same time - so I chose the DR headlamp. I would hate to be 7 miles up a trail and realize that I had moved my only headlamp from my camping gear to use in my emergency supplies. I need a headlamp for medical emergencies, also while unloading shelter supplies its a big help to have a headlamp rather than juggle a flashlight and a hand truck. The DR is affordable enough to buy a handful, and buy up a stock of CR2032 batteries (bulk is better), and put them where I need them. I realize that someone somewhere will do a scientific study that finds a better headlamp, may be even better bang for the buck, and that's fine, but the DR has proven to be useful to me in all the contexts I use them in.