I've read a lot of reviews that Fapturbo is good but some have said it was bad, same with Forex Megadroid. Are they really good?

I've also been getting a lot of emails on new ones; Forex Empire, Forex Ambush, Forex Espionage, Forex Derivative, Forex Wonder, Automatic Forex Crusher, London Forex Rush System, Forex Mobster etc. They all claim to work fantastic and will get you great returns. How are you supposed to believe this stuff. How do we know if they aren't coppies of other systems and just a piece of junk scam. Is anyone out there using one of these systems and getting great returns.