I have one but keep in mind I just use it at home and am primarily a bass and guitar player.

The sounds are very good IMO. A bit of a learning curve for someone like me, I had a BK-3 before which was dead simple. I wish they had included a data wheel-there is a work around with another knob for some things though. I wish Roland would provide some content for the sampler. That way you wouldn't have to be an expert to have say a top notch piano or drum kit. Also wish they had provided a simple sequencer although I admit to not using them much. Only 100 performances but I'll never exceed that anyway. A lot to like, for me I probably should have bought an open box BK-5 and saved some money, but I wanted the latest model.