I got a 2007 MDX as a loaner car this morning while my 2005 RL is in for service. The NAV and HFL seem much improved over the ones in my RL. It recalculates routes lightning quick and the voice recognition seems much more accurate. The MDX allows the phonebook to be downloaded directly from the phone (but my RAZR didn't support the downloading option). It also shows the signal strength and phone icon in the audio display even while the HFL is not active (my wife's 2006 MDX does this as well). The NAV is up high on the dash like the RL - though I thought the screen looked a little washed out in the daylight even with the brightness cranked up. Overall I'm very impressed with the technology and how it's coming along - it's much improved over the versions in my 05 RL and our 06 MDX.