Just as a suggestion - We're about to start running a new product made by Orca. It's an Orca Q Spark 2200kv combo, with a sensorless motor, very similar to the Hobbywing. It's so new that it hasn't even hit the website yet.
The pricing is pretty good and it should be more readily available within a few months. Click the Orca link in my signature for contact info.
(No, I'm not paid or sponsored by Orca in any way. I'm paying just as much as everyone else for their gear.)