context: After 18 years away from the game I'm a 3.5 tuning up to 4.0. Still playing my Wilson Sting, 12.5oz, 88". Big Hitter Blue Rough 17 mains / Gosen 17 crosses. Demoing the following racquets from TW. First session today and just wanted to rotate through them all for initial impressions. Dunlop ag100: 15 minutes. Groundstrokes: stable, precise, fast swinging, small but rewarding sweet spot, low powered, lead would help. Volleys: quick, precise, rewarding. Serve/Return: not yet. General: Great advanced level player's racquet that rewards good footwork and proper form. Felt like a lighter Wilson Sting. In order to generate pace I had to really. Like my partner said, "Love it today but wonder what it feels like on an off day." Gamma 330x: 15 minutes. 14 more than I needed. Groundstrokes: ping, boing, hits best if you take a full swing, anything less (touch, slice, drop) felt like a bad tweener. Volleys: ping, boing (that's with a dampener) Serve/Return: didn't bother General: me no likey ProKennex Ki5: 15 minutes. Groundstrokes: good pace, predictable, comfortable, hits a beautiful slice off either wing, swishing sound. Volleys: solid, controlled, pronounced swishing sound. Serve/Return: not yet. General: Warrants more time but must overcome the 'swish'. Sounds like an African Rain Stick. BB London: 15 minutes. Groundstrokes: stable, predictable, good pace, easy to swing, comfortable. Volleys: solid, controlled, good pop, quick. Serve: very good kick action, crisp and solid flat serves with good directional control. Return: quick but still blocks well, fast enough to take a full swing if warranted. General: clear leader after round 1. I will update the original post after more court time this week.