I have played with both and I'm currently using the 100. Previously strung with VS Team which felt great but had just a tad too much power for me to control at times. Just restrung with Tecnifibre Biphase 17 which lowered the power but gave up a slight bit of feel. I'm thinking about trying the 98 again, maybe with VS Team which might be the sweat spot. I'm a 4.5 singles and doubles players. Really like both frames and am curious to hear from others who have extensive hitting experience with both frames.