I would say Fuhr, but it's not by the lopsided margin that some on this board would have you believe. Fuhr was the perfect player for those Oilers teams: a guy who didn't put up spectacular numbers (he didn't have to), but he could steal a game when the gunners weren't clicking, and when the Oilers needed the big save late in a 5-4 or 6-5 game, Fuhr would get it. Truth be told, I think he could have been even better, if not for his quirky traits (even for a goalie), his love of golf (which seemingly surpassed his love of hockey) and his dislike of working out. (When he did work out later in his career, he was a Hart Trophy candidate in 1996).
Vernon will always be one of my all-time favourite goalies. IMO, he should one day join Fuhr in the HHOF. A little more spectacular and flashy than Fuhr, he could also steal a game when his high-powered teammates in Calgary and Detroit failed. He made several game-saving saves against Vancouver in Game 7 in OT in 1989. His experience was critical to Detroit's win in 1997, and to helping the Sharks back to the playoffs (and respectability) in 1998. Flashy and acrobatic early in his career, a smart, steady leader later in his career. An example of a goalie who made the necessary adjustments to survive after he started to lose his early-career agility. But I'd still take Fuhr.