Definately some nice Jazzy tumes on your soundcloud channel... And a nice voice.
The audya sounds wonderfull, makes me wondering if the pa4x will sound just as good.

For the rest all i see is some great service, both from AJ as well as from Ketron UK with a possible do it yourself solution. This boasts my confidence in Ketron, knowing that we also have a reliable dealer overhere in Holland.

I think the catuall fail of the output is something that can happen to any keyboard, i am allways more interested to see how solving the probelm gets handled. In this case, it looks like you are getting pro support.