thinking of visiting canada in 12/2025. trouble deciding which city.

my husband and i go on annual winter trips to nearby countries. we live on the east coast of the US. we recently got back from europe and survived -14C temps with no issues, so we are interested in exploring canada for the winter. we love nature, food, sightseeing. we were thinking of canadian cities between vancouver, toronto or quebec city. we've both been to montreal. thoughts? suggestions on specific things to do/see are also welcome.