Many community members, including me, have the Kuna lantern and are very happy with it. It doesn’t integrate directly with SmartThings, though. But it does give you a porch light, motion sensor activated camera, two-way audio, and a panic button siren. And it has on-demand video, it doesn’t have to be triggered by the motion sensor. US $199. Sold by Amazon, so I don’t think the shipping to Canada is terrible. I know there are some Canadian members who have it.
http://www.amazon.com/Kuna-Outdoor-Security-Camera-Light/dp/B010FWU62E
Anyway, just another option to consider, particularly if two way audio is important. You could still add the Aeon doorbell if the doorbell features are also needed and of course that piece would integrate with SmartThings.