TN this AXI I think would work the best:
http://www.hobby-lobby.com/brushless-axi5320.htm
The new one should fill the gap betwwen too heavy and this one too light and not enough power. For my new Sickle I opt'd for the Pletty Evo 30, big bucks but seems to hit on all the points I really need in my plane. I still love my AXI's F3A's but the weight just doesn't work in my new plane. Mike