Sub amp-Nak or Rockford-I,ve used both and they are great.A cut above the others you mentioned. Speaker amp-Cadence or Rockford.I,ve used the Rockford and it sounds clean and is somewhat underated power wise.I haven't used the Cadence but I have seen good reviews on the ZRS series and I like it because you can bandpass the rear speakers to keep some of the high end out so they don't pull the stage backwards as bad.