When I started flying a couple of years ago. I had a 46FX on a Super Star. I used a MAS 11x7 which worked great. A 11x5 or 11x6 would work fine also, but my favorite was the 11x7. I used a MAS because it is the best prop to learn to land with. APC props don't take ground strikes too well. Plus the MAS provides better breaking on landing approaches. I did a maiden for a pilot that is using a 50SX on a super star trainer. He is using a 11x7 also with great happiness.