I have a Nextbase which is very good, but I had to buy a stick on mount as the suction mount is large and makes it hard to fit the camera in an unobstructive position.
My wife has a Kenwood DVR330 in her Mazda. It was a bargain from Halfords. It has a good HD image and GPS tagging. Being very small it’s easy to fit out of the way. The only downside is the camera isn’t a very wide angle, but it’s good enough. It’s now discontinued but you might find stock in store, otherwise the newer 430 model is worth a look. It can be bought from other on line sellers.