I agree ... I use Registrations heavily on my Tyros5 ... for most songs, I have one Reg for the song. I use the RIGHT 1, 2, 3 to "prepare" additional sounds I can quickly switch to ... such as R1=Piano for the 1st verse, R2=Jazz Sax for a solo, and R3 to Vibes for change of sound for 2nd verse. Then I can combine R1+R3 for 2nd chorus, to get yet another sound - all from one Registration.

For some songs, that just "need" more than one Registration, I use more. For example, I do a Sound of Music Medley that uses about 16 registrations (2 banks of 8). When I play "Scenes From An Italian Restaurant" (Bily Joel), I need a bunch of reg's to pull it off. But >90% of the songs I play, only have a single Registration for them.

I have shared hundreds of my Registrations on the PSR site, but for T3 and T5. Search for me (jimlaing) or for "sharing registrations" to find them.

Oh, and I use unrealBook on an iPad, and use its MIDI features to call up Reg's on my T5, so that when I load up a song (scanned sheet music) on my iPad, the Tyros changes automatically to the appropriate Reg, and I can immediately play the song. I also have started using Registrations for alternative songs ... since I had ~400+ Registrations, and many more songs than that which I play, for some songs I'll "re-use" a Registration from some other song. For example, since in some instances some other Waltz is similar enough to "Beautiful Ohio" (as a random example), that I can use the "Beautiful Ohio" Registration for one other waltz (song). I simply program the MIDI data for that "alternate" song to call up the Reg for Beautiful Ohio. And if needed, I program a Tempo change via MIDI if the "alternate" song needs to be a bit faster or slower than I'd set in the Reg for Beautiful Ohio. (this is confusing to explain; hope it makes sense! :-)

Anyway, yes, Registrations on the Tyros are very powerful and useful ...
Jim