If we are talking transformation mask, Goron hands down. Rolling around everywhere was fun and cool. It helped in some cases, but not alot. If we are talking regular masks, the Bunny Hood fo' sho'! I loved running and jumping at a higher speed. It was on one of my C-buttons roughly 85-95% of the time. If we are talking all the masks, Bunny Hood is dominating every mask in MM. It's so cool and I got use to seeing Link with the bunny ears.