Hey brother, I followed your advice and swapped the stock (80/90) tire on my GT Pro minus for the 100/90 pilot street 2, using your previous video as a guide. It was my first attempt at changing a tire on an euc, and it was a total success, so, big thanks goes to you. I'm very happy with the upgrade!
Ha that's why I said it's a complicated topic, range varies heavily depending on riding conditions (terrain, temperature, rider weight, riding style). I would have not talked about range honestly, but I know everyone wants to know, so that's the numbers I can give, approximately about 10% less than Master Pro V3 on the same route.
Unless you are unhappy with your EX30, I don't see why you should get a GT Pro+. Now, as someone who have owned an EX30, I can tell you that the Pro + give you the same stability, but is easier to handle and is noticeably more powerful. Still, not worth getting another wheel that is in the same category as what you have.