As both a performer and a concert promoter, I would say that the booker generally knows best--

Given that, I must admit that when I wasn't booked, I tended to have a lot of negative feelings about the booker, the booker's taste, and some generally biased thoughts about the aspects of the booker's intimate life, that honestly, I had no real knowledge of--

But as a promoter of mostly folk concerts, I generally did not have a lot margin for error--and even after I managed to fill an theater, it wasn't necessarily a guarantee of success(as mentioned above,audiences can and do walk, and sometimes they don't just walk), so I couldn't take on any one that I wasn't sure about--The up and coming act, eager for bookings, would say,"Just give us a chance!", but as the promoter, you can't afford to take a chance--