I love polys, but my 57 yo arm and shoulder can feel the shock that the monofilaments transmit. Enter Polylon Comfort, simple, combined smaller monofilaments dampen the harshness while maintaining enough stiffness to resist movement and still apply spin to the ball. Also reasonably priced.
My "gold standard" for string for a few years now.
Used full-bed on Dunlop Aerogel 100s, 90" @ 42-45 lb, and Dunlop AG Biomemetric 200 lites, 95" @ 45-53 lb.