If only doing counter then wolfgang puck express in the market place in DTD were the best fries, if you are looking for table at any point the planet Hollywood fries were the best from a table service we found
When did you have the WPE fries? DH LOVES fries and had the best fries there a couple years ago. In April, we had to make plans for a meal there just so he could have their fries again. Well, this time he was so disappointed because they lacked the flavor (?), he said. We'll have to try the Plaza sometime.
The Plaza and Liberty Tree Tavern at lunch have the same large cut fries. They are very good. As mentioned all the CS fries are the same, value engineered so they can just serve them everywhere.
The Fish & Chips place in the UK has fries that are so good. I can't believe that I spent an entire winter/spring down there and didn't eat them once! A testament to how many different places there are to eat in Disney, lol.
I love the counter service fries too. Get them covered in chili and cheese and you have lunch for $5
You can get cheese sauce for the fries at Cosmic Ray's, Casey's, and Pecos Bills.