I bought both this 9-LED unit and one each of the "GIANT Light - Small Package" Flashlights; the 21-LED and 28-LED versions, both for $[...], right here on Amazon.com. side-by-side, the light put out by the 9-LED unit's embarrassing. Yes, the 9-LED unit is slimmer; the head is the same size as the barrel, essentially, so it'll slide conveniently into a space the size of a roll of quarters. But, when you pull it out and use it, if you're lucky, like some here, it will work. In my case, I have to keep unscrewing and screwing in the battery compartment lid to keep it on... and it *still* flickers off for no reason or if lightly jostled. Forget it.The 21- and 28-LED units light up a dark closet like a floodlight. They're amazing. For 12 bucks, the 28-LED unit is an excellent deal. Since they're both the same size and price, I'd get it over the 21-LED unit. LEDs are power misers. And both units have been rock solid. And they come with a nifty little nylon velcro-closed belt case.