Being 60 and coming off knee surgey I finally dropped down to 15lbs and my main ball of choice is the Virtual Gravity.  Since November I shot 2 300's and 2 800's with it.  Out of the box I put a light shine on it and it hits great.  I don't have to throw it hard but can and it carries good from swingnign 4th arrow to up the board down five.

I bought one for my wife and she shot 661-701 the last two weeks with it.

A great ball and I recommend it for any type of bowler.