I own the Cary 306/200 and have never had a problem other than recently with some of the buttons on the remote control not working. It is I believe one of the best cd players ever made. It never ceases to amazes me with the quality of the sound it produces. I have never heard the 303/300 but I am sure it is also a very good player.
Disclaimer: I am currently selling mine to purchase a Modwright Transporter.
Disclaimer: I am currently selling mine to purchase a Modwright Transporter.