That was at Fountain Tire, not sure if you have those out east. I talked to three different locations and they all told me the same thing. I did look into bringing Marathons in from Tirerack.com but I would have had to take the wheels off myself and have them mounted at the shop in Edmonton that deals with them which still would have cost me $200 more and been a major PITA. As long long as they don't blow out and I get 4-5 years out of them, I'll be happy.
Just from my personal experience, the Marathons would be worth the extra $200 and the PITA problems.