The BrotherHobby Returner series of motors are probably one of the most influential and longest running of the modern mini-quad motors, spawning dozens of derivatives and OEMs. The Returner R5 is the latest in this series.
The 2207 edges out the 2306 by a tiny bit. The R5 is a strong performer combining good response and torque with a reasonably light weight. In the R5, BrotherHobby continues to excel at balancing power and weight.