I tried (and then bought) this whilst waiting for Battery to be ported to AU. It is really easy to use and integrates very well with Logic 6. It does not have velocity switching etc, only one sample per instrument. It lacks the ability (AFAICT) to save a kit's samples when a kit is saved - this would be handy, and for this reason only, one star off. There is an on-line forum and the developer responds really quickly.