First and foremost, the TC will not be available until May. Therefore, what you are listening to is what was produced from a prototypoe--not the final product.
As to the Digitech VR, it no longer is in production. I have a pair of them (can't have too many backups), and if you have the opportunity to listen to UD's beautiful song, A Nightgale Sang In Barkley Square, which was performed using the VR, you instantly know he has mastered this device and utilizes it to the greatest extent.
The new vocal processor from TC promisses to be a wonderful device, one that can really provide the user with yet another incredible tool. Of course, as Dave has demonistrated, you must first be able to sing, and secondly, you must explore the device and use it as it was intended--sparingly.
There is an excellent, new, post by big741 (Dan) who produced outstanding vocals using the PSR-3000's vocal processor. Dan revealed a number of interesting techniques that he used to create his harmony effects, which are incredible.
Good Luck,
Gary
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Travlin' Easy