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I use the AR7200BX on my N7 but can't comment on the governor as I use the Align governor which is cheap, small, simple and VERY effective, I also only use the one head speed (MAX ) so it suits me down to the ground!
There is also another pinion option for the N7 if you wanted to convert to a gasser. Quote from the blurb "Multiple Main Gear Ratios – Want to run the Synergy N7 as a 600 class helicopter with a 90 nitro motor? Want to run the OS GT15 gas motor at a different gear ratio? You can do it! The Synergy N7 comes with a 17 tooth pinion and a 139T main gear. Optional pinions are available to accommodate many different configurations." It is a light heli and the tank is directly under the main shaft so no CG change as the tank empties. The gear ratio is higher (lower??) than the Trex and the distance between blade grip pivot bolts is shorter so it has more machanical torque than a Trex which means less bogging when you've got the sticks in the corners!
The only thing I don't like about the N7 is the look of the canopy but that's a personal thing.
60% of the time, it works every time!