How much do you want to spend? If you want to spend big money go with the Hacker A100 or I even have a Neu Motor 2215 inrunner set up with Spin200 for sale. If you want to go cheap, more my style
, go with a Suppo A7050 (199.00), CC 160HV (270.00), Xoar E26X12 prop and a set of Hobby King 8000mah6S for 12S. I have this set up on my 26lb OMP Yak and it flies great. Plenty of power to hover and any imac manuver. Hope this helps.