I never played with the 2015 Blade 18x20, only the CV version. The CV blade compared to the Ultra Tour has more stability, plow/raw power. Also more muted feeling. Also haven’t played the Ultra in stock form either as the one I got was pretty light, I have a leather grip, 2 overgrips and 6g of tungsten tape at 3/9. It’s more maneuverable/whippy than the blade for sure.