I think dollars have to be in this equation, Big HP takes more RPM and more money, Unless you have unlimited funds, Engines should be looked @ as a trade between power and dollars, I am a small block guy so I look more @ dyno sheets from builders Like RJ & Brian , Brett and a few others, Some of the art of engine building is to provide good power bands with torque and HP with in the dollars allowed,That being said I wish I had a lot more disposable income