OK- why go to a bigger prop after breakin?
Will the thrust improve?
Will the engine run cooler ?
will it produce more thrust?
Or are you looking for "bragging rights?"
There is a combo which will work best on a particular model combo -and type of flying.
3D might be much better with the smaller props - If you fly with throttle wide open all the time -- well ---any prop -- Not picking on the DA50 - it is a great lil engine -
Just noting that a bigger prop does NOT mean more usuable thrust-on some flying setups .
On 3D -the engine is being jockeyed
up and down and really never reaches unloaded flight. So the engine is actually being held to lower rpm and a higher actual load ( mo heat)