Just bought 1 pair of Axiom M22 V4 and look to setting up a pure and budget music system with an Integrated Amp and CD player. Old school, right?

Any suggestions on which AMP to go? NAD D 3020 or Marantz PM 6005 (with 5005 CD player).

Another question: do I need to add a sub? If so, how big?

Any response is appreciated.