Sorry to rehash what's probably been discussed a lot on this board before, but I couldn't find much of recent vintage. I'm also worried about some older messages saying that Frontera Grill has gone downhill. My wife and I are driving crosscountry and will be in Chicago for a few days. We definitely want to try one of these two. I know they're connected to each other (physically and financially), and that Frontera Grill is cheaper but not easy to get a table at. What else should I know? Which one should we go to?