The TSO has a 5.1" barrel, a sub two pound SAO trigger out of the box and a wider frame to accommodate high capacity .40 mags (capacity in 9mm is unchanged). The perfect CZ for USPSA Limited in .40
SP01 Shadow Orange:
The SP01 Shadow Orange is a standard frame with a 4.5" barrel and DA/SA trigger, a great pistol for USPSA Production.
Shadow 2 Blue:
The Shadow two is the hot new Production gun in 9mm, similar to the SP01 Shadow, only with sharper checkering like the TSO, a slightly longer barrel (4.7" I believe), and considerably heavier.
My personal preference is for the SP01 Shadow over the Shadow 2, but I'm an Open shooter