I'd still put Habs/Nords above it, but maybe that is just my hazy memory from living in Montreal as a kid.
Remember the nights when they would go from the Montreal/Quebec playoff game to the Edmonton/Calgary playoff game. Now that was a doubleheader.
Personally, the Montreal/Quebec rivalry was just as good and in fact had more aspects to the rivalry than Edmonton/Calgary. Habs/Nords was not only geographic, it was political, it was corporate (Labatt's/Molson's), it was personal between coaches (Bergeron vs. anybody), there was a lot of player movement (Lafleur playing for the Nords was the equivalent of Gretzky playing for the Flames) and even coach movement. And unlike Edmonton/Calgary every series they were always competitive and suspenseful.
1982 - went the full 5 games, winner scored in OT by Stastny at the Forum
1984 - went six games, concluding with the classic Vendredi Saint
1985 - went the full seven games, winner scored in OT Stastny at the Forum
1987 - went the full seven games, famous Alain Cote game
1993 - went six games, habs begin improbable cup ride
Either way, both rivalries to me epitomize hockey in the eighties.