^^^Great point, corners. about 1/2 way down the page, there is a comparison review box. where you can put in another string and compare it to 4 G string.
Section on Energy return, 4G has higher number if you compare to RPM blast 17g. Does it mean 4G has more power ?
Does energy return = Power ?
Babolat Pure drive 2012, 55 lbs, Kirschbaum Proline X / X-1 biphase. Nalbandian backhand and Nadal forehand.