I have a temporary Boss amp for now (HC1900) and it does the job, better than I thought it would actually. I don't have experience w/ Crunch or Jenson, however. Thus far, I haven't had a problem w/ my Boss, although it puts out nowhere near what it says it does. I doubt the HC1900 has much more than 700RMS, bridged in mono, when it claims 1800. From what I've heard, there are two major problems w/ them. The first, which I outlined, is they overrated their products by quite a bit; secondly, some say they are not that reliable (although mine came with a 6 year limited warrenty). Just my two cents