Someone introduced me to Papa Ceo's on Spadina Ave., right south of Harbord St., and I had no idea the love affair I was stepping into. Cora's is the pizza joint right next door, and the two have a friendly rivalry, and have had for years. On any given Friday or Saturday night at about 3 a.m. you can see the line-ups of boozed up merry-makers standing in line for a steaming slice of their favourite pizza. Which is better? Cora's or Papa Ceo's? There is no right answer. I was in the Papa Ceo's camp. Some of my friends swore by Cora's. Cora's slices were huge, fit for three. The bigger the better. The crust was doughy, so was Papa Ceo's. Cora's had a special homemade tomato sauce. So did Papa Ceo's. It didn't really matter. At 3 a.m. people tend to be set in their ways, and want what they want. You could often here people in line having drunken' conversations about which pizza place they liked better. Sometimes there were shouting matches, but people kept either to the left or the right, rarely crossing over.