Scott, I have not played the G70 yet..
I have all the styles converted to the G1000..and they are my go to styles..
I have owned and played the counter products that helped originate the G70..Namely the VR-760[a great organ/piano keyboard]. Fantom X [piano sounds],reported the G70 surpasses the Ultimate piano patch..

The features of the DisCover 5, including the vocal harmonizer,That I am also familiar with..

Features and utilities from the VA series[I also owned],are incorporated in the G70..

Comparing your RA800 sound bank to the third updated sounds since it's day, tells me your ear isn't up to par..The G1000 added significate sounds;many from the JV series]..like wise the VA series added another bank of sounds[many from the XP/XV series...Now as reported the G70 has added new sounds from the FantomX, as well as incorporated sounds and playing designs such as "guitar mode",,available via Version 2...

If all of the above features, even in the state of the early models mentioned, should make the G70 a "killer keyboard"...

I will let you all know after I spend some time[make that ...buy one}with one...