The double whip has twice the reach for those laid back couch sessions.
This unit incorporates a couple unique esthetics like the studded plug end and the new dark green cloth covered power cord. Most of the real breakthroughs for me are inside, the wrap is a return to an old style that wasn't working, I tweaked it a little and now I believe it is the cleanest, most long lasting of all. I also made a bunch of changes inside the plug... this unit should be the most durable so far. It took me a while but it was worth it.