Ian,
The Korg had an issue with the touch screen after a slight bump in a very cold parking lot, and although it was an easy fix (a wire popped off)... I lost a little faith in it. It's 2 yers old and I was restless, and since I no longer depend on music as my sole living, I wanted to try another setup ... I see now that I already have the best one for my needs. I'll just have to be a little more careful when I'm unloading the car in winter! lol
Honestly - side by side, these two are not even in the same ballpark as far as power or vocals. Instrumentally, they stack up pretty even, but the speakers in the Korg, and the TC VP are worlds ahead of anything I've heard so far. I'm sure the new mega-million dollar T4 is better than this unit, but I still haven't heard a better VP than a TC.

Looks like I need to make a return BEFORE Christmas this year! Sigh ...