Some 46 engines seem to like 11x4, 11x5, 11x6. Some like even bigger. My brother's TT46PRO, on a Big Stik 40, likes 11x5 best for the way he flies it. Lots of people are happy with the way the APC 12.25X3.75 works on the engine but it didn't suit my brother's Plane/Engine/Style.

I'd bet the EPS prop will work great on about any trainer.

Prop choice really seems to be voodoo. What works on one engine/plane doesn't work on another. Two people with 'identical' plane/engine combo will run very different props.

Sometimes it seems you need a box with every size prop ever built so you can experiment to find out what works for you.