Pizza Papalis is the one you are thinking of - it's more like Chicago style [[my favorite chicago place is Pequods in Lincoln Park, which interestingly is a mix of Chicago and Detroit. It's the thick pie-like middle of Chicago with almost a Buddy's style crust. Second favorite was Pizano's in the Gold Coast, which is straight up Chicago-style).
The best place to have Detroit-style pizza, in my humble opinion, is Buddy's. It seems to be the standard. The original one is in the city, but it's in a rougher area if that kind of thing bothers you. You can check out one in the suburbs too - Dearborn isn't that far. But I swear, the original is the best!
http://www.buddyspizza.com/locations.html
Buddy's needs to open a downtown location, for real.