realistically, if you have solid motor mounts, there is no reason to change the tranny mount. Its physically impossible for the tranny to move unless the motor mounts are sagging (bigger problem..), correct?

I have solid mounts, that why I am asking

 

not true at all actually, and they each perform their own function

the transmission moves around ALOT on it's own mount, and that movement causes a very sloppy feel to the gear to gear movement. The shifting is completely different, and direct with our mount installed. In fact, I'd say the transmission mount is a better overall upgrade (in terms of netting a tangiable difference) vs motor mounts, as the stock motor mounts are quite stiff (which is why the solid ones do not really emit any significant amount of additional NVH)