If you are able to position the antenna so it can 'look' NE through a window, you should be able to do well with an Antennas Direct SR8.
http://www.antennasdirect.com/store/...door_yagi.html
The Antennas Direct web site has a list of Canadian resellers to check with.
If you can't locate any reseller in Canada that handles this somewhat specialized antenna, consider the Clear Stream 2. Though it's intended for outdoor installation, it's compact enough for indoor applications.
Both antennas are going to have more gain and directivity than the flat antenna. Having real gain, they don't depend on an amplifier to claim artificial gain.