Its Deja vous all over again.
I think past discussions resulted in a tacit agreement that each arranger board has strengths and weaknesses.
I have no experience with the Roland G-70 got as far as the G-600 and RA-800 and I have played the G-800. Roland has great sounds and styles. As for ease of navigation on a gig, the Yammies have it. For general all around sounds and styles plus the extra features like the songbook feature and the ability to have mixed media in playlists, among others - including the weight factor Korg PA800. For live drums; Ketron with Roland not too far behind. And, never mentioned, but no slouch on a gig is the GEM Genesys series good overall sounds and styles.
Ciao,
Jerry