You'd be hard pressed to find a homegrown Cincinnatian who naysays Tucker's. They've been in the city for many, many years, and, from what I've been told, have never changed. It's true that you'll find everyone from the near homeless to suits eating here.
The Big Tuck is probably my favorite burger. There's not one thing about it that makes it stand out- it's just an all-around great tasting burger.
Pro-tip: for whatever reason, sugar tastes really good on their fries. Not a ton of it, but a decent sprinkling of sugar and salt on fresh fries taste like you're eating a little sliver of funnel cake or kettle corn. It's surprisingly delicious.