I had the VM9021TS. You are right, it worked perfectly as advertised. Unfortunately, NAV was not anything that was advertised for any Jensen unit.
They may have upgraded by now, but the add-on NAV was beyond horrible. Dual Zone is nice, but rendered useless when in NAV mode, because it shuts off every other function of the unit. Didn't even allow the audio source to continue in the background.
IPOD was nice, but not nearly as integrated as my D3, much less the F series.
The Jensen is under $500 for a reason. Don't get me wrong, if that is your price range and navigation is n