So eventually I ditched the BK-7m as well and last night the owner of a music shop over 130 kilometres away brought me a mint Roland G70 at a very very competitive rate, which is now sitting in my room along with the Korg PA800 and Yamaha PSR 750.
Not having played Roland for the last decade but being very familiar with the G800 generation I thought it would be a breeze but it is not. That is like any major totl keyboard the amount of parameters is dazzling, but that is not much of a problem really apart from being a time thief... The structure of saving and loading registrations, styles, etc. I find truly obnoxious, other than that it sounds promising along my other boards. So now I can put the "four D's " contributions to good use after all and I will not even have to do without Touch Screen,Aftertouch and Dynamic Arranger, things so conspiciously absent on the new Roland flagship. Extra thanks to Diki who in a PM explained a few pressing matters to me.
Having said all that and with all my personal experiences in arranger keyboards it remains a mystery to me why these companies continue to churn ot new arranger keyboards doing two steps forward but ( at least) one step backwards. I guess that is where the money is to be made really. It is amazing to see how many cannot wait for a Tyros 5 (or equivalent) to hit the scene. Truly remarkable!

regards,
John