Anyone here have the PS Engineering PM3000 stereo 4-place intercom?

Is it really worth $200 more than the comparable Flightcom 403?

How well does it sound with music input from an iPod?

It's TSO'ed, so my A&P/IA is having much less heartburn about
installing it... seems the Houston FSDO has been on a rampage against
mechanics installing non-TSO'ed intercoms in spamcans and calling it a
minor alteration.