Looking at all the other equivelants {some 4 times the price of this one}, I can see no phisical difference.
I chose to move mine towards the neck by 1/2 cm, so to keep full intonation ajustment, so having to machine some wood out of the pickup cavity. Doing this also smooths the sound of the bridge pickup a little (to my delight).
I always use acoustic guitar strings on my electric guitars for the sound and playability. I never did like the sound and feel of the thick and floppy electric "G" string, maybe you understand why I need this bridge, for seperate intonation of each string, but above all else, I like drilling holes through guitars :-)
A super upgrade at an easy price (for me).