I own 3 keyboards

Motif XS 6 (same FSX keybed as Tyros 2-5)
Roland G70
Yamaha PSR S970

I Have also owned a PA3X (same keybed as the PA4X... I think??)

The Keys on the G70 are awesome definitely a more natural feel than the rest. The black keys have a nice texture to them as well (doesnt feel like plastic). Not only does the keybed feel so good, it also has a fantastic dynamic range, It simply adds more realism to your playing...

Some of these attributes get overlooked sometimes for other more "glamorous" features...