I have lived in Canada for ten years.
B.C. is very outdoorsy, what with the parks, rivers, coast, mountains. Taxes are 12% here - refer to
https://www.retailcouncil.org/resources/quick-facts/sales-tax-rates-by-province/
B.C. is a very laid back province, especially Vancouver Island and is where a lot of people come to retire. Vancouver is a major city in B.C. and rent and mortgages are high but again, everything is relative.
Alberta is historically a cattle and recently an oil province - that is, a lot of residents work in oil and gas or agriculture. That has changed a little recently. Taxes are low, most of the province is conservative in politics. Calgary is a livable city and is very close to the rocky mountains. People are overall friendly here but as with any city there are some bad eggs here - pro white supremacist rallies/trump rallies here. I have lived here for 10 years.
Ontario has major cities like Toronto and Ottawa. Toronto is the most populous city and has lots of things to do in and around it. Taxes are high and rent and mortgages are high too.
Maritime provinces have that friendly vibe, rent and mortgages are lower but so is salary.
It really depends on what you are looking for.