BravoFly is a part of the Lastminute group. They aren't the worst OTA out there. For a flight of relatively low cost such as to Jersey where the £20 difference can be "significant", I wouldn't completely shy away from an OTA, but go in with the expectation that it won't be easy to manage in case of cancellations etc. Having said that, Lastminute group aren't the worst OTA aren't there.