The few videos I've seen of the footage it doesn't look particularly great. I've had a Street Guardian SG9665GC for a long time now (less than £200) and transferred it between many cars. It's still running great (using a VICO hardwire battery protect which is now discontinued unfortunately). There are later versions of the SG now and they are capacitor based not battery, so good for hot weather.
Go full screen to see the difference, especially reading plates.
AUDI UTR:
SG9665GC: