Adam Kinzinger in Illinois’ 11th is quite impressive. His very youthful appearance may hurt him a bit now (looks like he is 20), but will serve him better later in his career.
I have heard good things about Hultgren in Illinois’ 14th (Hastert’s old stomping grounds), but I have not yet met him.
You have a real good guy up your way in Joe Walsh, he’s in the North Chicago area.