The work flow of creating classes, and the overall initial impression of the look and feel. We had a committee of almost 60 people - an instructor or two from every academic department/discipline, our IT department, my department (academic technology)
The big thing that convinced me to vote for Canvas was that in Canvas the HTML editor that is present basically everywhere you can input text has a widget that allows you to record voice/video direct from your computer (mic for audio only, webcam for audio and video), gets saved directly to Canvas, gets converted on the back end by Kaltura, and is served up in an appropriate format for whatever device is being used to view it. This is a big game changer for foriegn language, public speaking, any course that requires a student to make a presentation. Even changes math instruction - instructors can point a webcam at a piece of paper on the desk and work thru a problem, giving a voice over while showing the work being done.