You'll have to ask the main man @Al Krow, he was harping on about it for months before I bought it off him but I wasn't really listening. (I am a busy woman).
All I have really done with it so far is use the custom effects but only because I have other software, and have no desire to use a drum machine.
I would recommend it as a good starter pedal though, just to get some flavours. It has certainly helped me begin to discern what's what.