T5 is the future no other manufacture will get near to it.
It depends on what you are looking for...
I think Korg with its kronos, that is modular and has sevral different engines is quite some steps ahead of Yamaha in that department. They could easilly bring that stellar sound quuallity to arrangers add an extra engine for Brass and Wood and still be cheeper then Tyros..
But then who wants total controll over his sound?
But for OOTB playabillity for most hoby musicians and people that want to make music that just sounds like the orriginal, T5 is the way to go.