Originally Posted by Gtech
I have tried 4G twice with different strings in between. I won't use it again. Hard on the arm and no free power. I hit the ball hard and I am used to polys that give you that extra snap when hitting a hard serve or flattening out a ground stroke, this string does not give that. And maybe that was the design goal, a string that behaves exactly the same no matter how hard you hit it.
You've pretty much summed up 4G. Stiff, hard, consistent, but on/off power characteristics and not particuarly spin orientated. You could get a similar thing from other polys costing 1/3 of the price.