They were super nice: said there were no customers in store so there was no problem if I even listened to a system. They took me to a room (Ayre amplification; don't remember speakers) and played for me and also chatted for a while. Super nice people, nice equipment, and great attitude.
Being super nice with a great attitude just seems like a better way to live, let alone make a sale. There seem to be two possible prompts for a sales person being a jerk -- they're in the wrong business or the customers and/or environment of the store have made them jerks. Not many here are admitting to be part of the problem, and maybe we have 100% sweethearts on this thread, but I bet those in sales could spin a tale of the Customer from Hell.