The BoFeng is basically an NT that has been "improved." It uses a different style of jet and has the various changes mentioned by Damien. In my experience they tend to run a bit better at part throttle, but are still a simple single jet carb just like the NT.
The little bowl drain on the bottom is a nice feature for quick and dirty long term parking. I would prefer it was a pintle style screw over the spring loaded system, but it works fine and hasn't leaked so far.