Before you ever post a thread again, make sure you have all the details we need. I.E. : What kind of power are you looking for, and at what ohm load? Crunch is a Brand from Maxxsonics, which is also the makers of MB Quart, Hifonics, and Autotek. Hifonics are well known for being a good budget amp. Crunch amps are right up there with them, but I don't think they're class a/b amps are on par, luckily for you, you're wanting a class D. I don't know much about Kole Audio, but I have seen/heard good things about their QX monoblocks. Never had any personal experience with them though. Look into Hifonics, they're great budget amps. Really need to know what specifications you need before we can help you out much more.