This weekend I purchased a Totally Defiant, and was given a Pursuit and an original Defiant.
The Totally Defiant, 1.5" Defiant, and Profit have my current span, the rest if I really wanted to use them on a regular basis need the thumb holes moved, and the Pursuit cannot be used until I move the thumb hole.

I have 4 spots plus my spare ball in my 5 roller.  for a league night, at a relatively inconsistent wood house, which ball would you have fill that remaining hole?  I also have an old 3 ball + joey I can use for going to tournaments.  Should I have any of the older stuff plugged and moved?  Polished? Surface Changed?  Try and trade some for other stuff? 

BTW - My release I start my fingers about 7 o'clock, thumb around 1:30, and fingers come through the ball to about 1:30ish

 So at my disposal, if I wish, I have

Totally Defiant- 4.5" pin, pin up 1" above ring, thumb kicked out about 1.75" weight hole about 4" from thumb and ring finger

Defiant- 1.5'' Pin, Pin up about .75" centered between fingers, Thumb kicked out 3.5" Hit with 4000 abralon

Defiant - 3"Pin, Pin out ring finger, double thumb weight hole, polished

Profit - 3.5" Pin, pin center over fingers, .5" up, thumb out 3"

Versa-Max - 3.5" Pin, pin over ring up .5", thumb just off the marker line

Persuit - 2.75" Pin, piin over ring 1", thumb out 1.5"

C-System 2.5 - 2.25" Pin, PIn over ring 1", thumb out 2", Weight hole 4.5" from thumb, 3.5" from ring.

Black Widow Pearl - 3" Pin, Pin Up over ring .5", Thumb out 1", Small weight hole 5.5" from thumb, 3.5" From Ring.

Black Widow Estimated to be about same specs as BWP, But with big weight hole not as far out, estimated due to thumb hole currently getting redrilled at proshop.