Mastercraft is made specifically for Canadian Tire.
Mastercraft as a name is made only for Canadian tire, yes, but Craftsman tools found at Sears are the exact same product with a different name stamped on it.
I have a shitty Black And Decker one outta Walmart, and its gotten some good use over 2 years, still going strong, only cost $28.
The dewalts and mikitas are good if you are going to use it every single day, for like a work tool or something, but for weekend use the extra quality they provide isn't worth the price, a cheap one will do you fine, just make sure you get one with some sort (even like 2 years) warranty, in case you get a bad one and it breaks fast.
Edit - As noted, Mastercraft/Craftsman tools are the shit and carry some of the best warranties in the business.