I like the idea of the dash cam but where do you put it for the maximum view and how well is it hidden? In the UK someone would smash a window just to get the dash cam.
I ordered
this Lukas LK-7200, not from Amazon but from ebay.com from a Korean seller. It was $150, and I'll be receiving it next Monday through Fedex. That's super quick shipping.
It's not really hidden because it sticks near the rear view mirror on the windshield, and it even has a blue LED blinking so others know they are being recorded. If somebody breaks in to get the dash cam, then there's probably nothing that can be done. I had
Lukas LK-7900 on my CX-5 for about a year, and happy with it. It's hardwired from the fusebox so there's no clutter. I have a automatic power cut-off device which shuts off when the battery drops to certain voltage. If I don't drive my car, it won't record beyond a day at a parking lot because the battery. I bought the Lukas because they are low power (2.68W) and can withstand high temperature (up to 80C).
There are models which two cameras that can record front and back, but I didn't go that route because that would be too much hassle to install and would require double the power usage.
If you are worried about the loss of SD card (for evidence), or really worried about the heat, there's also a
Lukas LK-7300 which has the camera part and SD card recording device in a separate box so you can hide or lock the SD card device somewhere else.
I'm not familiar with any other dash cams, and Lukas seemed to be the most popular cams used in Korea so that was my choice.