To tell the truth, I don't have an 11 speed arm. Maybe speed 8 on a good day (75-85 metres). But, with a level throw I can turnover a 149g Fission Wave, get a nice s-shape from a 155g, and a 171g is straight with a decent fade. And the 10 metres that I gain with a Wave over a fairway driver can make all the difference. But you are messing with an understable distance driver so be aware of the wind 'cos even a 171g can fairly easily become a turnover in a moderate headwind.
The other plastics that I have tried Waves in have all been overstable, though I have only managed to find a few in the 160s. Also, a Fission Wave was my only disc to really suffer from a few days playing at Mijas and go from s-curve to turnover, so they do beat in relatively quickly. On the other hand, my 171g Fission Wave has hit a decent number of trees and is still generally overstable for me.