And Chicago is where Oregon Symphony conductor Carlos Kalmar is leading the Grant Park Orchestra. Here's a very positive review of Kalmar and the orchestra in the Chicago Tribune. I don't know how long the link will be available, so I'll excerpt a quote from the article by the Tribune's classical music critic, John von Rhein:
Just as the festival is observing a major milestone, so is Carlos Kalmar, who's celebrating his 10th season as music director. The orchestra is playing better than ever under his vigorous leadership, a fact that was evident in the two Russian war horses that made up the program, Tchaikovsky's First Piano Concerto and Mussorgsky's "Pictures at an Exhibition," heard in the Ravel orchestration.
So, the Oregon Symphony is not the only orchestra that has made great strides under Kalmar.