I have the TC VoiceLive 2 and I really love that powerhouse. Mind you, you'll have a learning curve to negotiate if you really want to get everything out of that one. But as far as harmonisers go: the VL2 is da bomb!

I bought the unit when it first hit the market. Now after several (free!) firmware upgrades the unit has even more functions and effects then when I bought it. TC keeps on developing this unit and keeps on adding functionality long after the product hit the market!

Try searching VoiceLive 2 on YouTube, say the ten preset demo by Tom Lang, and listen to some demo's.