As you can see in all of these replies the answer varies....i think it varies so much not because one is better than the other...but because each person in thier own mind is looking at which car/engine combo will be used and in what way it will be utilized. Some were thinking small displacemt 4 banger...some but V8s. Some for 1/4 mile...some for autocross. and some the main concern was that it be streetable some could care less. And then of course throw in cost. These parameters will be more of a factor to whats good, theres more than one way to skin a cat!