Very well summarized
Sokratis -one can't repeat these things often enough.
Most here are hobby musicians and too many times we (wish to) buy new keyboard just to have new toy to play with. But if we don't know
why exactly we need new keyboard, disappointment usually follows. What I'm saying is, someone can be happier with PSR-SX600 than someone with Genos. Not because PSR-SX600 would be better, but because he made right decision for him. Yes, Genos has "this and that", but who cares if "this and that" is later never used. When buying, we shouldn't look for "the best" keyboard... we should concentrate on things that matter to each one individually.
Having SX700 for few years now (and two Yamaha's before), I know quite well what I like, what I'm missing, what I wish to be better and what I need. If I find such keyboard and I can afford it, I'll buy it -doesn't matter who makes it.
Finding objective information is not easy... because nobody talks about limitations and explains them (as practical consequences). Yes, if lucky, we can tryout keyboard for few minutes in local store. But let's be frank, the only thing we can check is keybed and panel buttons -and that's it. There's not enough time to get an impression of style & voices management, style & voice creation, connectivity flexibility, recording options, etc.
And then, there are "little things" that we many times don't even notice. For example, on Ketron Event, wav sample length is limited to 6 seconds, which in my opinion, is extremely short. I don't know, maybe long sustain is solved differently on Event, but nobody talks about that. Ok, I'm not some pianist, and so 6sec is probably not an issue for me... but it's an 5000€ keyboard, where piano (or any voice) is expected to be flawless -it's simply assumed at that price. That is, Event might be excellent keyboard for me, but how can I know that, if nobody honestly talks about it's limitations and workarounds?
I think above is the main reason why we tend to stick with brand we have... we just try to avoid bad surprises (especially at high priced keyboards). On the other hand, by doing that way, we maybe miss having "the perfect" keyboard
Bogdan