yeah the flip one could get annoying but you could also mount it in a place where you left it up the whole time and only shut it when you dont want it.
The interesting/good thing about these monitors is that they all have 2 x AV inputs, so I could get myself another generic camera and mount it on the front of the car. Hmmmm, this could turn into much more of a project than I anticipated.
Another option is the Navman MY75T which has a AV input, but since I already have a GPS I'd be paying $400, essentially, for a bigger screen and AV input.
Have just bought some play-doh, so will make up some mock device sizes over the weekend and see where they best fit. The flip down compartment under the stereo is winning at the moment.
Thanks for the help so far guys.
Update...think I've solved it. The top comprment of the armrest. Is out of the way and if I'm reversing I'm already kinda looking it direction anyway. Should need no holes