I've actually never cared much for motorized faders. It's just one more thing that can break. Went through several faderports. I don't find the 'jump' to be a problem for soft synth or mixing control - since I'm usually looking at the control I'm automating anyway, I just move it to the right spot before my automation pass.
Guess it depends on your specific mixing workflow. I would get something cheaper and spend the money on other gadgetry.