I adore the Maple Leaf Lounge: hot soup (or oatmeal for those zero dark stupid flights), other tasty treats, comfy leather chairs, free wi-fi, quiet, looking at planes and free pouring the booze of my choice...what's not to love? Almost makes me glad to not have a life and instead spend my time travelling for work.
Unlike most of the reviewers, I do not pay for lounge access given that I have airline status, so I am not as cranky about noise (there are designated business areas where there are no kids, cell phones or people watching Youtube videos sans earphones)...just walk around the corner and you'll see this area.
The MLL is not as nice as the Star Alliances lounges in Europe or Asia, but for North America, it's the best we've got!