As far as firearm-friendly is concerned, as a general rule of thumb, the further east you go, the worse it is, and the further west the better it is. Even that is in flux, though - Alberta (long considered to be the most firearms-friendly province) just elected an NDP (socialist) government, with an extreme anti-firearms policy (one of the party's specific platform goals is the banning & destruction of all handguns in the country), much to the shock of the firearms community. It appears it may have been kind of a protest-vote-gone-horribly-wrong situation, but nonetheless...
That government has only been in power for a few days, and haven't yet had time to destroy the province, so firearms-wise, the situation is still more or less as it was. Stay tuned, though...
For the time being, at least, Alberta, BC, Sask. and the YT are still (relatively speaking) "firearms friendly".