Just finished listening to the entire comparison. Both keyboards sound fantastic - no doubt about it! My take on them:

Pianos - both about the same for the Grand Pianos, maybe a bit more depth to the Yamaha, though.

Guitars - Definitely Yamaha gets the edge here.

Organs - Korg has some really neat effects.

Brass - Yamaha gets the nod here - great brass.

Stings - About equal, IMO.

Drums - Yamaha by a mile. Much hotter, far more realistic, crisper, full sounding.

Don, get the T5! smile

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)