My compliments, Simon! I was very impressed with your comparative evaluation of the Yamaha line (540, 640, 740, 8000, 9000, 9000Pro, 550, and soon 1000, and 2000). In a very few paragraphs, which readers can see elsewhere in this topic, you provide a very thorough and informative comparison of the features and capabilities of the various models. I think your words certainly will help those trying to decide which model may be most suitable for their particular needs.