Diki
The answer is that I have not spent enough time with KontaktII and Colossus to achieve articulations suitable for gigs, eg delayed vibrato. THE B4II is great and no problem, but I have Nord Electro II,Technics KN7000 and the Roland G70 to handle organ.

I jumped onto the Receptor thinking that I am investing in non obsolescence. Perhaps ,but the learning curve is pretty steep. So it is like a patient virgin waiting for me to have some sort of intercourse with her ,alas ,it never happens. I am thinking ,one day , an app will come along to make the Receptor as easy as hardware(lots of luck). It is a Rev B with 1GB and maybe 50 hours on it.

Yes ,I'm a gear junky