I have 3 LED lights that I have used camping and 2 new ones that I will take with me the next time I go.
Stanley tripod - Takes 9 AA batteries, has 3 brightness settings, allows a gradual decreased light output with decrease in battery strength. Mine has more than a thousand hours on it. An excellent light for power outages. Bulkey and heavy for backpacking but great for car camping. We also use ours for a night bedstand light.
SureFire - Great durable bright light. Uses 2 SF123A batteries. The LED head is not as bright as the original (halogen ?????). With fully charged batteries LED good to 50+yds. Good backpacking light.
PETZL TIKKA - Takes 3 AAA batteries. This is my 'go to' light for camping.
TechLite LUMEN MASTER - Takes 3 AAA batteries, very bright on high setting. This is the brightest of the 5 with LED. Metal case with 3 settings including; low, high, and strobe. This was an impulse buy from Costco. 3 to a pack and reasonable cost. I don't like having to go from low to high to strobe to off. I'll give these to my friends when they need a light.
miraclebeam - 3 AAA batteries. Wide not so bright light. Metal case but lightweight. Cost $0 to $2 with coupon. Sold with batteries. Good light for the price.
If I could only have 1, it would be the SureFire or the PETZL depending on perceived needs at the time.