I have owned and performed with the Ketron X1, XD9, Midjay, SD1+ and they all sounded amazing.....as for service in reality when do you ever need it?.... and as far as playing arranger KB exclusively 100%?? not any more,.. times & technology have changed the live music performance business in so many ways lately and it's going in all directions even faster for the pro musician, entertainer player. singer. etc, sequencers, backing tracks, tablets, laptoops, arpeggiators, vocal harmony boxes, loopers, etc, ....it's the ones that embrace change and jump onboard the TECH train that survive...that said, I myself have made many changes in my tool box for stage performance in so many ways using different tools for each venue. One trick ponies get boring to an audience IMO. The Ajanmsonic is an amazing piece of gear, great for recording tracks also besides performing live, a bit of a steep investment but can easily be recouped for the pro player.
But for me as good as it sounds it doesn't sound that much better then my S-950 in my hands and that's where the question lies..... Do I really need it for what I'm doing now?...and the answer is no.

Carry on...