I have read many threads comparing speakers, receivers, and separates vs receivers that talk about the difference in sound of these components. For example, one brand may be described as having a "warm" sound and another may be "bright". In your experience, is there really a difference in cd players as far as "warm" vs "bright". Or is the differnce mostly in features and convenience of operation? If there is a difference, how would you describe the sound of one brand vs another and what brands have you compared that you can describe?