Daily Talker: What's The Best Slice Of Pizza You've Had? What Made It So Tasty?

Think quick --
Name the city with the best pizza in the country.
New York?
Nope.
Chicago?
Try Again.
Travel website giant TripAdvisor finds you can't beat a slice in San Diego.
#2 -- Las Vegas.
Citing Regina Pizzeria – Boston ranks third.
New York City ranks #4.
Seattle is fifth.
Chicago doesn't even crack the top 10.
TripAdvisor based its rankings on reviews and opinions from travelers.
What's the best slice you've ever had?
What made it so tasty?