Vortex Sound Research

I have seen some demos of the '90s Roland VP9000 (or V-Synth) and love its ability to "real time pitchshift" and manipulate the sample live. These are hard to find now at a reasonable price. I know of an Akai S5000 of a similar vintage for sale but cannot find evidence that the Akai can do what the Roland does. Anybody have experience of these? Can any of the modern-day samplers do this? Im really after a sampler-only unit and not a DAW in a box. Thanks!