We've been mostly shit in the last 30 years, so the competition has been limited. You did say 'ever had'; hence I thought it was a bit of an exaggeration.
Kuipers however, remains the best shot stopper I've seen in our goal. If his all round game had been as good, he'd have been at a PL team.
True, but we've also had some decent ones. To say that Stockdale is 'comfortably one of the best we've ever had' based on handful of good games is a bit of an exaggeration given how many errors he's made earlier in the season.