I actually plan on getting one of his kits for the big block I'm building. But unlike the majority of folks, I am looking for every last hp I can for that particular build, and it's not a 'budget build.' I just wish there was actual test data available showing what real world difference a 30% difference (or any % difference) makes. In other words , at what point is there a real-world measurable difference in lift or power. Is it just valve train/guide life? Ok - how much??? Again - give us numbers. I'd bet Mike has those answers - I would hope so anyway.
Not sure why you pipe up if you don't have an answer to a question that specific. Maybe you two oughta get a room.