I have been using these for over 6 years and regard them very highly. Not so bright that it knackers your night vision, but enough to see by (I would not to say read by, but I haven't used a 180).
The only thing I would say is use rechargeables, its just a little kinder on the environment. Battery life is simply superb and they're water resistant enough to be used in all weathers and mine have withstood a drop in the water or two, not to any real depth though a couple of feet at most.