I'm currently using hastings direct black box as it was the cheapest option for me at the moment. I'd recommend not choosing if you can. My drives are mostly OK, but as of recently it's been marking me down for hard acceleration, cornering and braking when I havent done any such thing. It is ridiculously sensitive. One of my most recent drives I was marked for hard accelation at a stop light that involved me stopping at a set of traffic lights which required me to do a hillstart, and in the same drive, going round a mini roundabout at 10mph, I was marked down for hard cornering. The drive previous, I was marked down 3 times in the drive for hard accelation all at traffic lights, which isn't possible since all 3 times I was behind other drivers. I am driving how I normally drive and before the last couple of days, everything has been fine, I don't know what's going on with the box recently but it's causing me stress and anxiety. Reading others reviews, I'm glad I'm not alone in my experience.