What always blocked me from buying a Yamaha arranger was the lack of a 76 key model.
Now that Yamaha finally did it, they pulled another showstopper for me: custom voice creator/editor.
Yes... tyros5 does not have anymore the voice creator functions to import custom waveforms and also the Voice Editor PC software is not included with it.
So to expand voices you are forced to buy their premium packs.... this is a very bad move from them. Not counting the expansive flash memoryboard you are forced to buy...