Yup - got fit for the GTS2 this weekend. Went from the GT3 to the GTS2. Kept the exact same shaft. The consistency on that thing was pretty stunning. The heavier weight in the back really made a big impact on my ball flight. My miss is a low spinning toe ball that goes left quick, along with a lower spinning GT3 and we were making things go from bad to worse on those mishits. With the GTS2, the spin numbers on that miss were much higher (from 1600 to 2200 ish) allowed that ball to stay in the air and not go offline as quickly. The whole thing just felt effortless.
My only question is if the 3 week shipping time is accurate or if it's a little longer.