i had the non UW Version for a short time. I want to route the MIDI Out to my MPC3000 as an additional Midi Input for the connected machines there.
I use an EMU6400 Ultra, too. So the addition of another sampler (MPC3000 is a (Drum) Sampler too) is a bit over the top. But with the UW i can createlets say a 707 or 606 very easy. My main Drum Machine is the 909.