IX in Chicago near AADS?

We have some cross-connects in Doral Plaza (155 N Michigan, Chicago) and would like to place a router where private peering (or even a shared switch) is available. Is anyone else located in Doral? Or, can anyone recommend a busy IX near AADS? It appears that Equinix has a facility a couple of miles to the south, and SDFC is 7 blocks away. I heard someone mention a "Universal Access Facility" at 600 South Federal Street, but haven't figured-out what/who's there. Recommendataions appreciated, Bradley I'd speak for my employer but I can't remember who that is (they keep changing the name). So I'll just speak for myself.