I had both and I would say they sound about the same, but I would go for a 303/300 for more than likely you wont have any problems.
The older 306 had some issues. Do some research here on Audiogon to find out more about them. The latest 306 Pro series is trouble free though.
The older 306 had some issues. Do some research here on Audiogon to find out more about them. The latest 306 Pro series is trouble free though.