No matter how similar they are to the originals...the lane conditions have changed in the past 15 yrs. The lane surface is harder and the oils/conditioners are thicker....so as much as they could be exactly the same...the playing fields have changed.
What they are is a great addition to an arsenal...they are a controllable ball motion.
The views and opinions expressed by myself are solely those of mine and NO one else, nor are they affiliated with anyone else.