Been on the road for 6 years as a medical contractor living in different parts of the country and gone through several variations of portable systems (L-40, Classik). Settled on an Onkyo one piece Executive system for $250, C.Crane Reflect antenna, NHT SuperZeros (modified) with Chord speaker cable. For flying it's the iRiver IMP 400 with Beyer ST 250 or Koss Porta-Pros. No headphone amplifier yet. Hope this helps.