The topic (subject of discussion) here is "adding weight" and its effect on flight if I understand well.

I have some questions to make people think.

Does the plane see a change of airspeed because it is windy?

Does the model airspeed change because the air is tubulent?

What cause turbulence in the air (atmosphere)?

What determine the weight of a model? (Earth gravity does not change where you fly).

If two models are identical but one is appreciably heavier,does it change its control behavior and if it does then how (what has changed)?

What do you mentally visualize by the word "penetration"?

Are you finding answers that satisfy your mind?
Of course no one has to bother thinking.

So what is best?
Always try to avoid a few more grams such as on glue so the model can have more separated pieces in a crash and have a more attractive dance in the air when it is turbulent ___
or ___some more mass, weight and inertia so the turbulent atmosphere has less effect on a heavier weight.

Is not weight another compromise like the whole rest of the design?

Zor