I'm also stuck as to what to buy. I heard sota and T2 and godzilla are the best ones to get, but do I have to know the frequencies to whatever I'm trying to kill? Is there one that will hit all the frequencies at once or in order? I wanna make sure I get it all because im not even sure of some of the things I may have. Do the beck based zappers hit all the frequencies? The blood purifier and the mag pulser? If i take beta-mannan while doing the beck protocol will the beta-mannan be useless?