I had the 6960 for a few days. Hated it. The multimedia interface was very cumbersome, nav was quite nice, but the iPod lists scrolling only showing 5 lines at a time on top of a small screen was a real pain. I had the Z110 last year sold it, then got the 6960 hated it and went back to an X710, and now have a 920 and even tried the Kenwood 7160. I got a killer deal on the 920 and love it. The nav can be annoying with lack of POI along route, but overall it gets you where you need to be, even if it does suggest a non-sense route. The multimedia section however is tops bar none. The coverflow was SLOOOOOWW on my Kenwood 7160 and the interface was terribly laggy outside of the Garmin portion.
The 920 is quick to boot up, quick interface, and VERY slick multimedia interface with gesture commands, plays files from mSD, and the Voice control for iPod has not given me any issue and is about 95% accurate for me.