I have switched from Telus to their Mobile service. To tell you the truth their coverage is not that great alot of dead zones and not just in basements either. I've been in different areas of Montreal and do not get coverage and it is due to the AWS spectrum that they use. It does not penetrate well through walls.
I hope in the next auction Wind is able to buy spectrum in Quebec and truly offer unlimited plans unlike what Videotron is offering.