Superdrive and Superdrive Pro only relates to the 27 series.
Standard is .005 straightness, Pro is .002.
All of the 23 series are .002.
I shot the Superdrive 23s the past 2 years. I liked them.
Then I tried out the Tank23....put two in a plywood wall, and didn't damage them one bit.
They are buillt like a tank, I know what would've happened if I did that with a SD23.
I've never shot a PS23, but I do like my Tanks. 120 Gr up front, pin bushings and nocks.
They group outstanding out to 50 yards (all I've been able to shoot until now...as the weather is breaking...finally).