at this point you have to ask yourself what the hell are Korg trying to do ?????????

The demonstrator is obviously not an arranger player. He does not know that he needs to change chords with his left hand in a timely way. He plays the lead guitar like he would a piano, the sax like a piano and the organ like a piano. Should i take a wild guess that this guy mainly plays piano !!

I know that Korg have better demonstrators. what about the french guy with 4 fingers on one hand ? He can certainly do better than this guy.

The sounds are uninspiring and now the keyboard has been out for more than 3 months and i am still asking so what the hell kind of upgrade is this ? When are the great DNC sounds going to be showcased ? Did i miss it ? Forget the specs . What are you hearing that makes you want to upgrade.

AS for the T4 its all beebn already said. this is an outstanding arranger in terms of pure high quality sounds and styles.