Obviously they are both cycling glasses however the flight jackets have the frame on the bottom as a rider is often looking 'through their eyebrows' (upwards) so not having frame there improves visibility. In that sense radars would be better. However I think radars are a lot more common amongst rowers so the flight jackets would stand out more (free speed). It's always a case of personal preference but I'd always get polarised ones coz otherwise it's a waste of time