https://www.cnn.com/travel/article/b...ors/index.html
"The honor of best pizza city in the United States goes not to those traditional standard bearers of pizza but instead to that innovative West Coast upstart of Portland, Oregon."
The pizza here is good, but it has no defining style, which is why I wouldn't put it in the top 5. There should be a definable "Portland style pizza" for it to be in the top. Just because there are many really good places does not, IMO, make a city the best.