detroiters in chicago this weekend

I understand that this is a very vague, if not impossible question, but i will try and narrow it down....

my girlfriend and i are going to be in town this weekend to see a show at the metro on saturday (dirty three on 10/15!), and i, being obsessed with good food, was wondering if anyone has any (relatively inexpensive) suggestions for some great food....

i have been to chicago before, and i love the frontera grill, although it seems to get panned on this site, and i have read that Ixcapuzalco is pretty amazing....

don't need any middle eastern suggestions, as this is probably the only food category that detroit has a leg up on chicago

my friend says al's is amazing, and i've never had pizza in chicago (sober) before....

anything else?

sorry if this is too broad a topic, but any suggestion would be much appreciated...

thanks

Why don't you start here. It may help lead you directly to a place you'd like to go, and if not it should at least focus your thinking.