If you go with the S910 you will be losing the keybed quality of the Tyros 3.

you will also loose the 8 faders, SA2 voices, Sampling feature and front USB port.

on a positive note you will be gaining a weight and size reduction and MP3 playback capability.

I am sure most styles will work but some tracks may need re voicing because the T3 does have some voices that are not on the PSR S910.

hope this helps.