Whats more important then just the upgraded sounds, is the new features the T5 has...
- the 76 keybed plays fantastic and feels really pro.
- full integration with a lot of upcomming T5 specific ipad apps.
- Audio styles
- Hugely improved DSP section
- More suited for piano players as its much better at following the chords in right hand.
- Audio edditing features
- The new sub outs