I just found out about Yamaha's newest model in their P series, the P-515, which was unveiled at the Summer 2018 NAMM.
I purchased the P-125 and I am very happy with it. It has only 11 Kg and sounds very well, even using the builtin speakers.
The main differences as compared to the P-515 are:
* third of the price (550@ instead of 1500€)
* half of the weight (11 kg instead of 22 kg)
* only CF grand, no Boesendorfer. But for me, the CF sounds way better than the piano sound of the Genos.
* only two parts, allowing for split OR layering. The P-515 allows split AND layering at the same time.
I use the P-125 now for many gigs. Rehearsal with choir works without additional speaker. For gig I use one or two Bose S1 Pro. Split and Layer functions work very well.
As compared to similar models form other brands, the Yamaha has one advantage: All voice switching including split and layer works very smoothly with dedicated buttons. You can do this while playing with the other hand. No function key plus piano key combination needed for voice switching.
And the number of 24 voices is very cool. I use many new voices like piano + synth pad layer, rock organ, Rhodes or DX piano. etc. The earlier models only had 12 voices.
It has standard effects reverb and chorus and one insert DSP for distortion or leslie. However, the leslie speed of jazz organ is only switchable by the 3-pedal-extension, not by standard pedal and not by any other controllers. So it is not useful for stage usage.
Uli