I know that most TM came with the IPS and that the IPS uses a bigger prop. So the question is, which non GWS prop for a non IPS system...

So I found some APC props for Slowflyer:
http://www.top-model.ch/shop/prdtOve...eller&ln=de-de

and the normal props:
http://www.top-model.ch/shop/ctgyOve...tarr-Propeller

which is the best for me ?