I've got one of these, they are pretty rugged.
http://www.amazon.com/Streamlight-85010-Scorpion-LED-Flashlight/dp/B00081NHBK/ref=sr_1_4?ie=UTF8&qid=1370029990&sr=8-4&keywords=scorpion+flashlights
The only problem is the CR123 batteries cost about $15 to replace, but they are really bright...