I don't believe the T3 harmonizer has had a software upgrade, so it still has some of the older vocal processor problems. Therefore, I would go with a TC Helicon Harmony-M which provides excellent results.

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.)