I have tried the Evolution twice. In the Infinity Prop 460 as a demo and in a an SMT Solly 3.5 fairway wood. The Prp 460 felt great producing nice drawws, was skeptical at first hearing about the 'plays stiffer than flex' posts on FGI, but it felt great for my ~95mph swing in this head. So then I got a good deal on a short Evo pull and put it in my 3.5 Solitaire fairway head, untipped at 42.5". Now I have gotten rid of my 43" thriver because the 3.5 Solitaire has come to life with this shaft , compared dto the UST Proforce FWshaft that was in it. The Evo is a great shft.
Lucas