If you're only gonna listen to prerecorded tapes, I would not spend much on a deck. I mostly made my own tapes but the few prerecorded tapes I had didn't benefit much from the way above average decks I had. They might have sounded even worse on a mediocre deck. I would suggest looking for a single well deck under the presumption that most of the double decks have one or two (both) lousy tape mechanisms. Your odds of getting one good mechanisms are likely better with a single well deck. You don't need a 3 head deck. Their advantages are strictly for recording. If you find a deck with dual capstans (tape rollers), it will probably give you better playback and less chance of a tape fouling during playback.