There was a postscript here. Before it was delivered I got to thinking - why am I buying the older model just to save a few dollars? So I went back to the dealer and spent a while re-testing all the models side by side. At the end of this, I changed my mimd and bought the CVP705, mainly because I really liked two features that were not on the 605 - the Bosendorfer sample and the new Session Mode. The Session Mode in particular is a very neat feature, that seems to just have been designed for how I like to play the arranger. The 709 got ruled out because my wife did not like the different, more open look, and because for the life of me I could not detect much difference in playing it over the 705, despite the big price tag increase. It seems to mainly come from the more expensive action, and maybe I am just not a good enough player to notice the difference. Probably a top of the line concert pianist would notice, but then would they be buying this keyboard?? Anyway am happy that I changed to the 705. Get it on Tuesday.
I probably should have posted this in the Clavinova section since it has become more about the CVP than the 3k!