Scott,
Thanks for the update. The speed at which this same action is carried out/implimented on the PSR3000 or the other keyboards mentioned above is way less than 1/4 sec.(don't have an exact number for all). Remember too that the T/T2 have the highest screen resolution ... so far!!
You are right about the voices not having any initial/original effects. Strange how Roland (with the G70) choose the other path and added excessive effects! But again, manufacturers each have their own methods.
PS:- Do not forget to send me what we talked about yesterday once you're done.