An great bit of kit. Really worth purchasing. Don't worry about the negative comments, just look at how many positive, satisfied customers there are. This shows the kind of support you will find for this wonderful product.
It may not work like a traditional VSTi in your sequencer, more like Sync Modular in that it opens a different window, but it is still simple to use.
Sound quality is excellent and varied.
Documentation is probably the only thing lacking but since it is so easy to use that shouldn't be too much of a problem.