Uncle Dave,
Whilst I respect your point of view, mine differs somewhat with regards to the Korg piano samples. IMHO Korg have ALWAYS fallen short in this department, I agree with you 100% on that one - Until the Trinity surfaced. The Classical and Electric piano samples are (to my ears) top notch. My reason for promoting the Trinity V3?? I will explain.
Here in the UK, a used Z1 can typically sell for approx £600 - £650. You can purchase a used Trinity V3 for little more than that. Add the Moss technology, a superb on-board sequencer, probably the best Effects section on ANY Synth and some quality upgrades which are steadily falling in price, you have a virtually complete studio at your fingertips.
I am a strong believer that without the right effect, the best piano sample will be left wanting on any synth. This is certainly not the case with the Trinity.
The Z1 was not designed with the classic piano sample player in mind, and as such, maybe our fellow music lover may have purchased in error. I do hope I am wrong on my last point, as the Z1 is an awsome board in itself.
Biased?? Me???? Ok Ok, I confess! I own a Trinity !
Nandu, are you happy with the Z1?
Regards.