I have found the customer service to be very poor for an expensive product I have the vertx plus which does not seem to work properly anymore when I contacted customer service they were very unhelpful and I had to send it back for testing at my own expense. Still waiting to hear back from them. Also I have the pro series 3 which the magnet that attaches the cartridge no longer works and also poor performance after several months They have just brought out a new series 3 I can't recommend buying this as it is expensive and I don't know if it is improved Also if you have a problem customer service is very poor