I was all set to get the 06 HCH with NAVi, but now I'm having second thoughts about the NAVi. TomTom (http://www.tomtom.com) makes a nice nav system for about $900 that seems to have all of the features that the Honda NAV system has, and is cheaper to boot. If the Honda NAV display included info on the IMA (current state, et.c) like the Prius does, I would get it in a hearbeat. Anyone know if it does? Otherwise, why is it worth it?

Honda NAV:
- adds $1500 to price
- built in to the dash, no extra wires and mounts
- could be used to display IMA info (does it do this?)

Third-party NAV
- cheaper ($800 for TomTom)
- might get my 06 HCH faster, more color options

I'd be interested in how others made this decision.

Thanks!