I don't konw why, but I have a special feeling for the hacker C50 and I think that is the motor I want to base my setup on. But I realize that it's not the cheapest option.

A LHS sells a combo consisting of a C50-13XL 6,7:1, Hacker MASTER 90-3P OPTO-Acro. As it seems as the max. diam. prop I can fit on the Showtime without modifying/replacing the landing-gear is 20-inch (APC-E 20x10), I'll pick batteries that will give sufficient power with such a prop. I guess a 10s then is the choice? Since I have good experiences with TP in other applications I may choose two TP4000 5s Pro Lite packs.

As from Henke's recommendation this may not be the ideal setup in this particular plane (as he suggested the 12xl with a 8s pack), but I guess this combo still will work great and I will have even bigger room for using the same setup in bigger airplanes later if I should need that?

So this is the setup I am leaning onto at the moment, but still no decisions are made. I may still may end up with an outrunner :-)

Summary:
C50-13XL 6,7:1
MASTER 90-3P OPTO-Acro
10s TP4000 Pro Lite
APC-E 20x10

Comments would be nice! And even better, some test results (amps, flight-times, temps, etc.) if anyone have tried this particular (or similar) setups.

BTW, is there big difference in sound/smoothness of a geared vs. outrunner setup in this size? From my experience with smaller setups the geared ones are considerably more noisy! Is dampened motor-mounts often used to get rid of some of the resonance-frequencies you can hear in the fuselage?

OAK