If it’s for minimal usage I suppose any will do. A couple things to consider are longevity and quality, as well as the company itself. While some say government contracts really don’t matter I would say otherwise. They get royally abused well past an expected shelf life. Companies like Surefire and KAC will be around a long time. They won’t have to cut corners down the line to stay in the black. You don’t see them laying off hundreds of people or shuffling top management. Sure there’s cheaper and as such varying levels of quality like anything else you buy. It’s quite an investment in time and money and not easy to unload if one needs to down the road.