Great Christmas gift
I got the stack for Christmas and I love prevail and amplify. I'm a pretty dedicated gym guy so I don't need the caffeine jitters of other preworkouts. This combo gives me the focus and endurance I need to get through a heavy workout. Generated is great for recovery and I look better when I'm getting my BCAA's and EAA's. Triumph is ok. I didn't really see a difference with that. Overall this was an awesome gift from my wife.