I bought a G1WH-NTK96650 dashcam (generic chinese cam available on gearbest) out of curiosity/boredom and I've been pretty happy with it so far. The video quality is quite good, the mic is acceptable, and I found it quite easy to mount (it's pretty small and mounts easily on the windshield).
It only holds up to 32 G memory cards, but it will do 180 minutes at the 1080p setting (I think its actually closer to 960p, but I find the picture more than acceptable) or 450 minutes at 720p. My only real complaint is that it automatically loops the video footage whenever you change the loop video length, so you can't change them on the fly without recording over your previous footage.
For £31 (~£40 with the memory card), I'm happy with it overall.
I have adash cam bought from Ipixie. It is attached in front of the mirror so that it is not visible when driving. Includes GPS and time and good pictured when played back on computer.
Very good per and after sales. Even talked me through how to change the settings.
There are different models mine was just over £200. I think it was a good buy.n
From the camera, which is mounted behind the rear view mirror, the cable is wrapped round the arm supporting the mirror. It is then hidden behind the head lining, down the door pillar, underneath the glove box and under the cover at the side of the tunnel hosing the gear lever linkage.
It then emerges a few inches to be plugged into the cigar lighter.
There is only a few inches of cable visible at each end.#I did this myself. Only needed a screw driver to prise the lining away to put the cable behind it.