Without a doubt the OG EP pros. They have the softest flex of any ski you will ever feel, and that coupled with an obcene amount of rocker (more than a hellbent) makes it the loosest ski possible.
OG troublemakers, my friend had them and you could almost bed them to the point the tips were touching, unless someone has fruit roll ups for skis pretty sure that wins
Lizzies are far more flexy than invaders. My invaders feel stiff after skiing on lizzies. HG skis makes a super soft park ski too, they are lizzie soft.