I've hit with the Clash 98 a few times now. Mine is strung with Luxilon Adrenaline 17 at 48 lbs. So far, I haven't meshed with it nearly as well as the Pure Aero Plus. The big difference between the Clash 98 and the 100 Tour is really the string spacing as much as the head size. With the slightly smaller head and denser strings in the middle, the Clash 98 seems to be "the Clash for flat hitters." It drives the ball pretty well but doesn't pocket and spin nearly as much as the 100 Tour. I could probably drop the tension quite a bit more. Like the 100, it stiffens up and has a lot of power on full swings, but feels flexible and muted on slower swings and blocks, and the power level drops quickly.
I will continue to test it, but my first impression is that if you are an eastern forehand / one-handed backhand player or you generally like to block, chip, and flatten out the ball then this would probably suit you much better than either Clash 100. If you have more modern topspin mechanics, I think one of the 100 models would work better.