I think I'm in the minority with my opinion, but you asked. I prefer bolt on wings if the plane is designed to have a choice. Most trainer crashes I have personally seen where the wings were rubber banded still resulted in damage to the wing. If there are enough bands to keep the wing where it belongs it seems the bands themselves cause damage as the wing twists off of the fuselage.

I built the PT-60 and did the bolt on wing. I cartwheeled it a few times trying to land. Usually no damage at all. Once the wing bolts broke; still no damage. Then there was the fatal one that destroyed the wing. The wing bolts did break but it was after the main spar broke. As hard as it hit, the wing mounting method probably didn't matter.