I like the YVR Dom MLL as well. The business area downstairs offers a nice little hideaway with the cubicles and the mini-offices ^. Food selection is nice too with a great outside view of the mountains and the runway/gates.
I also like the YVR TB MLL simply because of its architecture and ambience. YEG isn't bad either.
I like the YYZ Dom MLL too because of its architecture and decor/ambience.