might as well chime in with my reply, since i started this mess..
Chicago LBS's...
my fave is On The Route, Belmont and Lincoln...
my second fave is Cycle Smithy, N. Clark, just north of Fullerton..
Sprockets...Broadway and Wellington...
Urban Bikes is cool, close, good parts bins...
Higher Gear on W. Fullerton seems snobby, bunch of lycra freaks!!!
Performance is lame for bikes, but decent for shoes, clothes, some parts, blah blah...
Kozy's is decent...not a fan of the Halsted location, but 400 S. La Salle has saved my ass a few times in the loop!
Village Cyclery on Wells has a nice selection of bikes, but I don't think they know what fixies are...let alone service...
there..ive said it..
randy