This lounge is far superior to the Admirals club in terminal 3. After AmEx and AA broke up and forced me to choose a dedicated lounge card, I switched over to United / Star Alliance.
While the United clubs in O'hare are comparable to American, the Maple leaf lounge blows both away, eh.
DIY bar with much better complimentary booze options (Glenlivet 12, Tanqueray, etc.)
Okay so maybe that's mainly why I'm waxing poetic and possibly I should seek out a 12-step program. But if you enjoy boozing in a nice environment before your flight, you can't go wrong here.
And something about free wifi, showers, and food, blah blah blah.