I've been putting with the 350G PA3 since they came out in May & it was love at 1st putt. It's no secret that while 350G plastics has a great feel to it, it's not the most durable. So with that I've been anxiously waiting the release of the PA3 in the production series 300 plastic, but the wait is over. I ordered two peach 300 PA3s and immediately noticed a few differences. 1st is that the concave top isn't as pronounced, but I see this as a good thing. The lack of dip in the putter gives it a smidge more stability which only helps make an already deadly putter that much more accurate. 2nd is the feel, its still got that velvety stiffness, but not as stiff as the 350G. The disc doesn't show much damage from routine putting either, unlike my SE 350G PA3 that I ordered at the same time as the peach ones. All-in-all: the 300 PA3 has become my primary putter for everything inside the circle, SE 350G PA3 is for jump putts & the original US Masters 350G PA3s are for upshots & short drives up to 350'.