Has anyone had the opportunity to drive all three major s/c cars? I know all customers fight amongst themselves, but has anyone experienced all three...if so, how was the craftsmanship of each system, etc. I've noticed the roe s/c whining a lot more (like a lingerfelter s/c) and you can hear it from a distance. I haven't noticed DLM or Heffner's whining with that high pitch sound. Roe sounds like an 03 cobra. NOT THAT ANY SYSTME IS BETTER THAN THE OTHER, but I just wanted an idea of what each was like. Why in the hell are the prices that scattered?