I have the better part of double that lift but if the differences are half of what I've noticed in a short period of time, yes worth the coin.
Edit - I don't know the geometry side well enough to know if it's linear or exponential in regards to benefit gained. If it's linear my comment stands, if it's exponential I'm not qualified to comment. I'm sure others are.
Edit - I don't know the geometry side well enough to know if it's linear or exponential in regards to benefit gained. If it's linear my comment stands, if it's exponential I'm not qualified to comment. I'm sure others are.