Thank you for the responses to me query.

Everybody's needs are different and the only true judge is to try it.

For me, I'm tired of always needing to add my Mackie 150 as a personal monitor when playing out on the T2. So the speakers of the S950 are of great interest to me. No choir voices. I would never use them. Some of the SA voices are nice but I am a woodwind player too so the artifical woodwind sounds are too, well, artificial. I really want a better piano sound. The T2 is pretty weak there. As for the keybed, as a pianist anything short of weighted keys is a big compromise. But I don't want to carry something with weighted keys. Get a PA600? One arranger is enough thank you very much. I'm looking to haul around less, not more. So even with the shortfalls, the S950 may be a good next step for me because I don't see paying over $5k for the next Tyros.