Now I have both and it never fails that the ball bowler is the favorite of the kids, 5-20, and the shuffles are always favored by the older adults, 55-70.  Just an observation I have made from different groups of people hanging out in my house over the last twenty years.
Me, I like the ball bowler, but I prefer the shuffle.  I grew up on shuffles and when I got the ball bowler I was like wow, this is cool.  I never saw one before I picked mine up.  But as the years went by, I find myself playing the shuffle more and more.  I must be getting old. 
