Goin' Coastal in downtown Canton if you like seafood.
I have heard all good things about Going Coastal, promised to go there with Katie a long time ago and still haven't made it. Also downtown is Downtown Kitchen is good, right in downtown as well.
Outside of downtown you have a few chain restaurants like you already mentioned. Taco Mac right before you get to I 575 or head north one to Exit 20 when you hit 575 to get to the restaurants on Riverstone (Outback, Provinos, etc).