I second the Brison 2.4 !!

I had one in a Sig Extra 300XS and WOW ! Gary (the owner) at Brison is a good guy and he really goes to great lengths to make sure you are happy. His engines just purr too ! From the small 2.4 to the 6.4 twin, all are fantastic engines.

I have been wanting to look closer at the RCShowcase offerings though (ZDZ and RCS) but you will not go wrong with the Brison.

I hooked the Extra to a digital fish scale and got a steady 22lbs with a Mejzlik 20 x 10 CF prop. If that isnt close to 1.75:1 then the CG is just too heavy.

Hope this helps you.

CJ