I've been using an 18g ashaway kevlar mains/17g Cyberflash crosses hybrid for the last month or so, strung at 40/46. I occasionally switch the CF with WC SS if I'm feeling classy. (I use a fairly tight 18x20, so this isn't too much of a breakage problem at all.) I absolutely love everything about it. The spin is incredible, it has amazing touch at the net, you can flatten the heck out of the ball and still control it completely, it bites like crazy on slices, and it lasts forever compared to polys. And the cost is great too... About $6 for a full job. Heck, I tried a gut/SS hybrid today... And hated it! I just love the crisp feeling I'm getting from the strings coupled with the flex of the racquets with the kevlar. The gut just felt too mushy, and even pingy. And then it broke, after only 3 sets. Thank god I wasn't playing anyone terrific, I felt pretty handicapped. I came to the net on almost every point because my groundies were frighteningly random. Anyway, J011y's posts about his rig turned me onto this. I tweaked it pretty severely, and love it now. If you're up for a lowish-powered setup with great spin and durability, try this stuff out. The feel took some adjusting to, but I can't imagine anything else now. Not to mention, my wrist used to bother me on some backhands... Never anymore. Weird, but true. Not the arm killer you'd think if you string low.