Relatively nice dogs, dumb as previously pointed out. Most of the retrievers I know or have known have all had issues with their tails being complete and utter tools of destruction. I've also known a lot (~5 dogs) who've been put down early in their lives years 6 and under. Not sure if its a breed thing or not, but worth checking into.
You could try the golden retriever club,
http://www.grcab.com/ for more info. Granted I haven't lived in Edmonton for around 5 years, but I think there used to be a breed specific rescue in the area as I often saw volunteers walking retrievers of all ages in the off leash parks. Might want to check them out too, or maybe the humane society as well.
Good luck, hope you find the right dog for you.