After many, many, many dollars spent on string (and cortisone), I think I have arrived at a "perfect" string bed. It's not too firm, not too soft, just right. Synthetic gut mains with a poly cross is just about the perfect blend of two worlds. I like the feel of synthetic gut because that's what I grew up playing with; well that and natural gut. But, sticking polyester in the crosses adds a nice element of control to the mix. The result is a string bed that is very livable and user friendly. It has touch, enough power, and control to satisfy. I also find that the synthetic gut breaks when it's supposed to and you don't wind up with a dead set of string that'll wind up hurting your arm. If it breaks too quick, just up your gauge. My personal preference is Gosen OGSM 1.15 in the mains at 54 and Luxilon Ace 1.12 in the crosses at 50. I have it in 3 rackets in rotation and get about 6 sets out of a string job. When one of the three breaks, I string them all. Cost per string job is a staggering $10 . For those of you who also like this setup, what do you use?