I'm looking for the best string for my Pure Storm and want to stay away from polyesters as they are too tough on my elbow. I was playing with Bi-Phase 17 but I've grown a bit tired of its' trampoline like feel. I want a comfortable string, but I want it to feel a tad crisper than the Bi-phase and still provide some nice "pop" with very good control. What is the best string of these three? Obviously, the Power Attraction 17 is the least expensive of these three mulifilaments but what would provide the best playability? What are the differences between the three? Thanks!!