For every person who benefits from the Destroyer...I am sure there is at least one person who purchases the Destroyer and merely tosses it aside because it is "overkill and the real DAT would never have questions like this." People who have that sort of mentality have already subjected themselves to defeat. They have simply purchased the Destroyer either in vain...or under the impression that it is some magical elixer.
I am in no way trying to call anyone out...but I have seen a lot of the science questions posted on this forum, and I say this with absolute 100% conviction that if everybody purchased the destroyer and studied it inside and out...most science related questions would vanish into thin air.
A lot of people talk about needing to have a "foundation" before attempting the Destroyer. Yes...there really is no substitute for actually attending bio/chem/orgo lectures as an undergrad and getting at least a 3.0 (which I believe is a sufficient foundation for DAT purposes). However, having used Dr. Romano's material extensively...I have to say that getting the most from his material is really a matter of will. Bone against bone....muscle against muscle....will against will. Could the same be true for other guides? Absolutely...but it is my belief that the outcome will not be the same.