We have more or less the equivalent of Mens Wearhouse in Canada called Moores. Their quality has gone down the tubes in the past years and their sales people are extremely pushy and not much help. I've sworn off them after a total fiasco of trying to get a suit fitted for me and them being totally unable to make it fit properly (because it was made wrong, as it turns out). I returned the thing and washed my hands of them.
You might try something like a made-to-measure outfit if bespoke is out of your price range (it's out of mine ,that's for sure) for the same or even less than what those big box suit stores charge you, you can have a suit made to your specific measurements.
Currently Maxwell's Clothiers out of Hong Kong is in the process of making me a 3 piece suit, made to my measurements with all my specifications (surgeon's cuffs, peak lapel jacket, shawl lapel waistcoat, high waisted trousers with fishtail and braces buttons, etc) as well as 3 shirts all for 700CAD. It's a crazy deal. We'll see if they live up to their reputation for excellent quality. When I get the product, I will be doing a post on the FL reviewing my experience and showing the results for everyone to see, so look out for it if you're considering M2M.