I am, I have two of them. I am currently using a Brunswick Smart Zone 1. It is a light #15 or a heavy #14, depending how you want to say it. I got it that way for a reason. Which is to use on wood lanes that transition and break down quick. the lighter weight allows me to throw it quicker/faster than my other equipment. Out of box it looked like a marble it was so polished. I can't complain, it works great, and I also shot 300/800 on those same wood lanes.
The second ball I have, well i'm getting, it's in transit to me at this moment and due for arrival today, is the Bionic Zone 2. It should be a good strong oil ball. I only got it to use on rare occasions, tourny's and such.
--------------------
As with all things, this is my opinion. And we all know, opinions are like butt-holes, we all have one.