Used the Harmony G-XT at band practice today.
Loved the harmonies. I use just a single harmony vocal a third above for the A parts... then the B I have Higher and Lower with doubling... so it sounds like a full chorus. Dammit this thing sounds amazing. I didn't experience any of the weird warbling or note-hunting that the Digitech unit did.
The only bad thing is that ALL of the LEDs are red so out of the corner of my eye, I can't tell if the unit is on, off, A, or B because all the buttons above it are lit. I'm going to put a strip of blue over those A/B On/Off LEDs so they look PURPLE and that should fix it... but I am going to write TC Helicon abou the issue.