It is hard to tell what any given person will hear for it depends on their ear, their room and many other factors. But when I had an Aragon 8008BB, I could hear differences in CD players quite easily. Players have come a long way so even cheap ones can be very good. That said with better players and DAC's one can expect to usually hear a less digital sound meaning a smoother, more natural sound, with even better detail and dynamics both micro and macro. This is because of less jitter and a blacker (quieter) background. Recordings by different methods and in different venues sound more distinct from each other than with a generic player. For me these type sonic enhancements are definitely worth it. Best way to tell is to audition a higher end player in your own home and make up your own mind.