The bundle of fun would be better yet if you added washout... That way you can stall and recover faster and more smoothly.

You don't have to use washout to achieve washout. IF you still want a straight wing and simple building, simply change the camber of the main airfoil at the tips. Last few inches. You can even go inverted instead of the more complex reflex airfoils.

You don't notice diamond dust etc deficiencies because they are so overpowered along with their very low wing loading combined with the fact that deltas have VERY high angle of attack compared to a "straight wing" that landing such super cheap, awesome fun planes is very benign. You will notice I prefaced my original comment regarding those using ducted fan/turbine airplanes which even though are a delta in general have FAR FAR higher wing loading and they CANNOT get away with building a straight wing like a fun plane. If such scale planes tip stall, they don't have the ability to recover as quickly as a Diamond dust.

Go to a scale JET RC get together and see how many of them tip stall and roll their plane into the ground. Seems there is ALWAYS at least one or two of them at every get together. Why? See above. No washout or washout equivalent, because said designers figured like you two clowns.