I think JBJ would have been the lightest user of the whole band. I'd say Alec was the heaviest user because he always looked out of it. It's hard to know with the rest of the band, they always held it together live anyway.

If you watch Slash and Duff at the height of G 'N' R's power you'll see two men losing it nearly every night.

As I said I think they were all on it around 87, this video of Raise your hands goes someway to proving that. Tico is playing way too fast for no reason and the other members look extremely pumped.