I've had a ContourHD for maybe 2yrs now...
Does well, decent features but not real friendly with wind noise. I use mine mostly for dirtbikes though, does great inside the car.
Just upgraded to the newer C+2 model for the iPhone controls/viewer and am having mic issues, working with Contour and the vendor to resolve but the picture and features are a good bit better than my HD. Worth a look... lots of mount options too.
'13 E92 M3 - SG/FR ZCP 6sp with sunroof *and* wood (old fart edition). MPE. Turner 10mm spacers x4.
Born on 07/04/12, PCD September 5th, 2012.