My major concern (other than the price) with an Audya would be whether the ROM styles cover my musical needs, and if there are any holes in the style selection, or insufficient selection in any particular style category, whether Ketron themselves are introducing new styles (especially those Live Drums styles) at a sufficient rate and variety to convince me that whatever is currently lacking WILL get filled in eventually...

Roland and Yamaha, and to a lesser degree Korg, all have VERY extensive legacy libraries, third party commercial and user created libraries. Your chance of finding good styles in any particular genre seem much greater there.

If the ROM styles have you good to go, the Audya looks amazing (with an amazing price, too!), but if you do a lot of music that it doesn't have, your options might be a bit smaller...