My advice would be to go with the King Tech K80E. If you are on a budget you cannot beat the value of the K80 engine. Unlike others I have owned in the past, this engine will start for you every time, it has great throttle response, net weight is lower, higher thrust, good fuel consumption and alround excellent fit and finish. Moreover the service level is excellent.

I used a K80E in my BVM F80 for my entry at the Jet World Masters qualifier and it performed flawlessly.

Andy