17X7 seems to be the best so far on the 170 good speed full noise & nice slow approach on the landing circuit with good response to small throttle inputs,But still playing around with different Props.
Trying the Menz 16X8 next.
As far as gas goes I haven't gone down that track yet or though with the new Saito FG series gasser's It might not be long.
But I still love my nitro fourstrokes ( old fashioned , expensive as they are )I like the torque curve, the sound & the smell.
Each to there own though eh ,makes for an interesting hobby & world.
Steff.