To that end...VPN/Proxy users may need to try different regions to find what is best for you. Here is a handful of exit points I ran some tests through that consistently connected to all three data centers (though, I still had issues with some getting into other established IP's). Some are obvious ones to try, because they are so close to the servers, but sometimes you find you fair better if you aren't right there in the Montreal area, so if you connect there but it runs like crap you may want to move outward a bit to see if it is any better:

New York
Montreal
Ashburn/Washington

Atlanta
Miami

Dallas
Minnesota
Chicago
Toronto

Seattle
Palo Alto
Vancouver