Tony you will not be sorry you gave up the Audya...
The Groove X7, will be an awesome keyboard for you. The only first tip I will give you right now, as you will probably be wanting styles, is to :
1. Buy the full licence for Live Arranger
2. Get yourself a Ketron SD2 (or 4) module.
However with the development coming from Tastenpoint for the audio styles, maybe they will not be necessary
I cannot wait to see what their initial audio style range is and how it sounds.
All the best, maybe Domenico can reserve one for you pending your sale of the Audya? Just give give a 20% deposit maybe???
I think it would be worth asking him as you are keen to purchase.