Disklavier

Hi there,

I am moving along in my discovery, and I am thinking of getting the 
following setup:

a PC to store midi files and run CUBASE SE, connected to my disklavier 
via USB port, and to a Roland JV2080 sound module via another USB port.

The latter will be connected to my pre-amplifier.

I am being told that the sounds coming out of those modules such as the 
Roland are very lifelike, and better than what a MK2XG can produce. Is 
that true ?

Am I doing the right thing ? Has anyone got a similar setup ?

Looking forward to your thoughts,

Pascal