Quote: "Behringer UMX-61 Controller keyboard. The Behringer I bought because it links up by USB and needs no external power - nice for a laptop."

Interesting. Are there any other conroller keyboards that have the USB hookup?

Quote: "Maybe the next thing for OMB is VSTi support as that could be awesome for live use."

Live-Styler by Norbert Stellberg is a VSTi host. It also looks like an arranger keyboard control panel which makes it very easy to comprehend, and looks very nice also.
http://www.live-styler.de/