If it doesn't bother you what you have I'd say buy the cheaper ones with the flash.I have both kinds and deer don't seem to mind the flashes on mine. Heres the way I look at it. If flashes bother deer, then they'd end up burying their own heads in a lightning storm. It may catch them off guard but they'll learn it causes no harm to them. Kinda like a feeder spinning and throwing food.