Why not PA3X on the list? I think its better then any of them.

Ketron:
1. Yes it is, as for the Technics MIDI Routing i dont know nothing.
2. I dont think the Audya 5 has any problems left, at least major.
3. The difference is that the Audya 5 was rebuilt and redesigned
from scratch in an SD5 body i think, it was more stable then the 76
and at some point at the begining they even had slightly different ROM.
4. No, Audya has no Arpegiator.
_________________________
Cubase 8.5 Pro. Windows 7 X64. ASUS SaberTooth X99. Intel I7 5820K. ASUS GTX 960 Strix OC 2GB. 4x8 GB G.SKILL.
2 850 PRO 256GB SSDs. 1 850 EVO 1TB SSD. Acustica: Nebula Server 3 Ultimate, Murano, Magenta 3, Navy, Titanium.