I would suggest also registering at Airsoft Retreat for more US centric information but Airsoft Canada is still a good resource.
There are some Tanaka rifles at eHobby but they're mostly out of stock, if you're willing to go with another model they make some nice ones too:
http://shop.ehobbyasia.com/sniper-ri...rks/index.html
There's also the Marushin ones at Redwolf, I would definitely NOT game those ones however (although I assume at 70 you're just a collector and would rather enjoy your vacations and retired life), they're nice showpieces but for playing with them it's honestly too much hassle:
http://www.redwolfairsoft.com/redwol...yCategory=true