Anyone using a poly that you were recommend that is on the softer/comfortable end of the spectrum (for a poly anyway)? My arm absolutely does not handle poly very well, but I sure love ripping groundstrokes and having them stay in the court. I've tried several polys and am currently hitting a hybrid with multi in the mains and poly in the crosses. I'm using Solinco Tour Bite 18g, and have used Lux ALU Rough and Spin in the past. Liked these better than some of the others. Would love to find one that is truely softer and more arm friendly, while still getting the spin benefit. There seems to be dozens saying they are soft. Any of these really live up to the claim?