I've got to say, chas, I have sat down and spent probably a couple of hours on the FantomG8 so far. It isn't calling out to me, going "Buy me, buy me!" yet

Very little is, to be honest. Nord Stage, perhaps. Nord Electro3, possibly. Right now, there's nothing but incremental change in the products, nothing groundbreaking, and FAR too many of the WS's are trying to incorporate multitrack audio recorders and sequencers that are pale shadows of a good computer system. Such a waste. That's why I like Nord so much. No sequencers, no audio recorders. Just great, authentic sound.

Take back the FantomG, and take a look at software. Get a dedicated computer JUST for VSTi's... Take a look at Omnisphere, BFD, Trilogy, Ivory and others. You want the best sounds possible? You want the same stuff the pro's are using? Most of them (even some live!) are using VSTi's right now. You won't be gigging out with this stuff, so portability is not a factor. You seem happy enough just with the C1!

Stop looking for a 'one keyboard to rule them all' solution, and get down with the specialist stuff...

Just my opinion....