I use thinkware h100 it s okay
PROS:
It has impact detector, and you can adjust how sensitive it is. Once it sense impact it will save the last 10 secs of the impact.
Quality is pretty good
You can take pictures
You cant delete the tape from the cam.
It record noise too.
You can connect it to car battery and run the cam 24/7
CONS:
Pot holes will trigger the detection and make beeping noise
It does not have a screen....
You have to reformat is every now and then but it s like 2 seconds
You have to keep it plug in while driving
It takes a couple of second for it to start recording after you start the car
I also uses a sony camera on my other car lol. Memory card last much longer but the battery is causing me problems i had to get a outlet and plug in a usb connector to charge it BUT it still runs out of battery slowly lol. So i have to charge it fully before i use it