I have played with the Wilson 6.1 line for years. I grew up playing with the prostaff 85 and Ultra II I have recently been playing with the BLX Blade 98. Today I hit with a BLX90 (six.one tour). I play 4.5+ but I am out of shape. The BLX90 gave me loads of power and spin. Granted my BLX Blade is easier to swing and generate power. The BLX90, when swung properly rewarded me with a very heavy ball. My 14 year old son said I had never hit better or heavier. Granted this might be harder to do in a match with another 4.5. It sure was fun to hit with. The BLX90 is considered a lower power racket but the weight when put in motion and do some incredible things. I would love to see this exact racket in a 95 inch version.