I don't think you will find many Wind users in this forum and suggest you search around for forum that specializes in mobile phones (no to mention any competing sites here).
Unless Wind's launch is a lot smoother in Edmonton than it was in Calgary and Toronto (service outages, dropped calls, hot & miss roaming, incorrect invoices, non-responsive customer service and lots of blocked ports for Blackberry users), it would be best to wait 2-3 months before jumping ship from Telus. From what I have heard, Telus is rock solid in every nook, cranny and well-head AB has to offer. Wind will offer service in Calgary and Edmonton only, for the near future, and anywhere else will roam on Rogers. Outside the cities, service will be only as good as Rogers.
That's the price of saving a couple hundred dollars and only you can decide if it's worth it.