In my oppinion, with the exception of the superb and over engineered Japanese built Hammond Organ keyframes, Fatar are the best keybed manufacturers. Their semi weighted range and newer lightweight hammer action frames are extremely well made and will give years and years of trouble free professional use. I dont view the Tyros keyframe to be suitable for professionals, but people seem to like it all the same.
Where it comes to organ and synth keybeds... the high end Fatar keybeds certainly are on par or slightly better than Yamahas high end FSR keybed thats both in Tyros5 as well as the Montage and Motif.. Keep in mind that Korg PA4x and Roland G70 are also using those high end fatar keybeds..
The best most hammond keybed is probably the FATAR one Crumar modded for their MOJO.
Where it comes to Piano keybeds in mobile and stage piano's, Kawai and Roland are currently leading. And even tough they made a catch up recently at Fatar with their latest weighted 3 sensor keybed, it still falls short