i've only been there for breakfast/brunch on the weekends (the only time i'm in slc...) but to that end, Sage's is absolutely incredible. everything is great. i highly recommend the crepes! and everything else, for that matter. great, friendly staff, good music, great atmosphere. a+
UPDATE: went for lunch last time i was in town, got the philly, with huge chunks of homemade seitan, on amazing bread. even better than brunch!!!