Do Ketron have mid-range keyboards in their line anymore? In fact, I am not even sure they ever made them, I've always known them to be TOTL. I think a fairer comparison would be with a least a Tyros 4 at the very minimum as the T4 does have a fuller sound than the S950 and it's most noticeable in the drums.
Danny,
The Audya has dropped in price dramatically from £4200 to £2900, it was old technology when it came on the market and even older now, still it sounds good, but I think what's on the T5 will see it off, I don't think Ketron have the money to bring out a new KBA to catch up, don't think they will ever catch up.