Depends what you want it for. If to sent the internet to sleep with miles of some random road and holiday views then go high end like a go pro but having said that there is Chinese equivalents that get great reviews at a fraction of the price. National Geographical sell a version also. They should all be HD.
If you want it to just cover your ass with
insurance claims something middle of the road. The 30 quid ones from Aldi get good reviews also. Yeah you can get the 15 quid ones what people say if good but if its for an
insurance claim i want as much detail as possible so would stick with HD.