Ok, I've spent a couple of days with the VP9000 and I'm thoroughly unimpressed. Basicly, it's a sampler combined with recycle, and obviously designed for people with >masses< of money to spend, but mysteriously, no access to computers and software solutions.
As far as the actual functions you can perform, it's rather limited - pitch and time compansion doesn't get very extreme, and isn't anything you couldn't get from software tools 1/10 of the price. The quality of the sound isn't amazing; no better than you can get with the better software tools, such as Protools or Prosoniq Time Factory.
It's better than Acid at pitched instruments and does have this neat function called 'groove', which alters the timing of rhythmic samples from triplets to 2/4 time. It's pretty transparent, but nothing you couldn't do with other tools, if you >ever< needed to.
The sound also has that 'tubby' roland feel to it, and voices warble and artifact easily, but not enough to be interesting; no different from any other kind of shifting gets..
It might not be too bad as a live 'rhythm' sample player, but I'd be much happier triggering midi instruments from a laptop or doing all the time shifting before I got on stage, if I had to loop, and using a regular sampler at 1/2 the price for a lot more toy. It's not designed for live playing; no tap tempo, sampling and encoding take time and the UI isn't laid out for quick buttoning. The box is a overpriced dog.
<rant mode off>