It is not a situation of the number of tv's that is a factor of antenna selection at your location. It is receiving the tv stations that can be received. Use what ever antenna you choose to use. Any antenna will get you some stations. My suggestion/recommendation is to cover all the bases. However like I say , please use any antenna you choose. And please seek other advice. Here is a Canada web site that has a forum for broadcast digital television for the area of Canada that you live , you will find advice givers there ,
http://www.digitalhome.ca