The Alpine amp is going to be better for the Subs because they are more compatible and its what its made for. Alpine is better than crunch anyways as long as you have real watts on the amp. I have 2 Alpine R 15"s and I am running off of an Xplode amp so just make sure the amp has the power to push the subs.
the crunch says its more powerful but i doubt it. its not cea compilant which means it puts out what it says and the alpine is. i haven't heard much good about crunch other than its cheap the alpine should power those Es well. and alpine has a much better rep than crunch for making more quality products
