Are we talking highest quality or most useful? In the case of the latter there's a bit of a long story about that:
10 years ago me and my buddies decided to do our version of one of those "food walks" (where you visit a bunch of different restaurants, eat something from there, and the last person to not puke/shit their pants wins). We settled on taco bell as the GTA had planned on closing a ton of locations, made a route of about 30 of them, and had the condition that each menu item we ordered had to cost at least $5, must be eaten entirely before proceeding, outside food/medication was banned, and you couldn't order drinks alongside it. Oh, and it had to be actual "dinner" stuff (so like no breakfast wraps).
After the 8th location half of us backed out but still followed along anyways, with things getting pretty heated (bets were made, insults were thrown). We were driving over to taco bell #9 out in the area between oakville and burlington when all of a sudden I started to feel violently ill. At the time we were driving near a hospital with no bathrooms remotely close, so we decided to stop by there. If the bathroom had been located anywhere else outside of next to the main entrance I would've lost a decent pair of pants and left a giant stain on their floor.
Oh, and the staff there were super helpful and found our entire thing funny, but warned us that doing stuff like this could be a huge health hazard especially if we don't prepare for it ahead of time.