For what purpose? Waterproofness? Color temperature , rendering? Reflector or TIR? When i buying cheap flashlight most important thing is it "dismantlable - moddable". Wowtac A2 with rechargeable battery for 20$ looks really good. And looks like it's moddable. Read more https://translate.google.com/translate?hl=lt&sl=ru&tl=en&u=http%3A%2F%2Fforum.fonarevka.ru%2Fshowthread.php%3Ft%3D40372%26highlight%3Dwowtac