Romanow: I tried 50 sparkling wines in one (hiccup) day

I was in Toronto a couple of weeks ago and did two solid days of wine and bubbly tasting. (I make sacrifices for you, faithful reader.) In one afternoon I tried more than 50 sparkling wines from Champagne to Prosecco to Canadian sparklers and everything in between.  
The differences between the various wines is much less to do about the method used to produce them these days — pretty much any winery can master the technology behind the Methode Traditionelle —