Trying to decide between Zapco reference series amps(1 4ch 1000.4 and 1 1ch 500.1) or Tru Technology amps along the same wattage. If any of you guys have tried either I would appreciate your thoughts. The 4 ch amp is powering 2 sets of ADS components and the sub amp will supply 1 Koda 10". SQ, longevity and durability are the concerns, not the fact that they are very expensive. Thanks
