I researched cassette decks from ebay 3 years ago and found "best value" deals on Nak CR3, one of which I bought and tested for a friend. It beat out the SQ compared to my refurb Teac V770 (which I also recommend) and to a JVC 3-head deck TD-V621 (which I bought for myself as a backup; not bad but not as good as Teac or Nak). I thought that most of the Nak 3-head decks circa late 80s-early 90s all looked good, but some were going for a premium price. The decks I considered were CR3,CR4,CR5,DR1,DR2,DR10, and Nak "Cassette Deck 1". A full refurb on any of them would be good to consider IMO. PS the CR3 finally broke down after 3 years according to my friend. No repair shop nearby where we live...