Cass,
I can only echo what most have said above. You've made an excellent choice and I'm confident it will serve your needs very well. As for the vocal harmonizer, check out Dan's latest post and you'll be amazed at how great it can sound.
Good Luck,
Gary

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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.)