I have a home-made SBGH (Single Bay Gray-Hoverman), and a Philip's silver sensor with a cheap preamp. I am using the antennae indoors. The SBGH picks up more channels and have fewer dropped-outs, but it is large and inconvenient to turn. I have been using the silver sensor, because it is smaller, and easier to reposition to aim towards CBC or towards Mt. Mansfield, for the American channels. The silver sensor, with the cheap preamp is "good enough" for me. I pick up CBC English and French, as well as NBC, CBS, FOX and PBS.
In Pointe-Claire, CBC may be a challenge, because of their low power. However, I believe Pointe-Claire is actually closer to Mt. Mansfield than downtown. You should be able to get the American channels. My silver sensor is picking them up through a gap between two buildings, a tree at that gap, and two walls (one interior and one exterior). NBC and PBS are usually so strong that it does not matter where I point the silver sensor, but FOX requires an accurate aim.