I really like the Thurnite Ti3. It's about as big as your ring finger in length and diameter (70mm X 14mm) so it's really easy to slip in a pocket or attach to a key chain. It has 3 + 1 brightness modes (Firefly = .04 lumens, low=12 lumens, high=120 lumens, hidden strobe 120 lumens), it runs of a standard AAA battery, it tail stands, it comes in cool white or neutral white, and it has a pocket clip! What's more, it only costs 20 dollars shipped and is covered by ThruNite's lifetime warranty (I've used their warranty before and was very pleased with the service I received.) It also has a glass lens, (most of the smaller fenix lights use plastic) and the body is made from type 3 hard anodized aluminum which means that it can take a beating and still look awesome; mine has bounced around in my pocket every day for the last six months with a vic super tinker and miscellaneous other junk and you can hardly even tell that it has been used. It's also went through the washing machine, been thrown in with a sink full of dishes, and dropped from a ladder. It's really a well built, tuff little light, and for the price and features it can't be beat. I suggest getting the natural white version as the color is better, (the cool white version has a slight blue/purple tint to it), and I'd also suggest picking up some AAA eneloops so that you don't have to keep buying batteries.