Just wanted to say that i am really enjoying my Leviathin! Great product and very clean burn. I liken it to a souped up race car idling so quiet you barely notice its there but when you give it some gas, man it's on!! Another thing I'm enjoying about Leviathin is that it does not give me dark circles under my eyes lol Not sure about the rest of you but almost all stims give me a wired, cracked out look making me look like a meth addict. I'm exaggerating for emphasis for sure but ephedrine does this to me and AMP does too after a while. AMP is a great product but I don't want to look like a junkie after taking my "products" =) Anyone out there experience dark circles under their eyes after taking stims or is it just me?