I'm trying Technifibre NRG2. I strung it at 60lbs in my Dunlop Aerogel 4D 500 Tour. Its just okay for me. Maybe I should have strung at 55lb-58lbs. What are some other suggestions for string? I like good spin and pop. I have been using poly the last few years and have developed tennis elbow. I just can't do poly anymore.