Anyone care to bet money that the section used --other than thickness --has no bearing on post stall/near stall flying .
remember we are talking about models here --
My own experience is that the wing loading is far , far, more relevant .
Why anything other than a simple ,strong symmetrical airfoil is used on any of our powered models -is a puzzle to me
or for that matter , any airfoil which is easy to build and strong enough. Thickness affects stall angle on most shapes other than that -I see no real differences.
Heaven knows I have tried enough different combinations.