Good morning, in my experience the older recorders from the 70s are the most difficult to manage, the more rebellious ones can require months for complete restorations, but once restored they can record superbly and truly realistically, like my BIC T3 for example ; or a good model could be Sony TC-K71/81 which are also rational restoration bases, TEAC C-3X or Tascam 122 first version are also excellent, these are all models I know (they have passed through my hands), great performers with Superb quality heads. Going towards more recent models, integrated circuit technology has lowered costs and improved precision, the second generation models provide more controlled, more precise recordings but, if I may say so, the strong realism effect diminishes; a good model I know is definitely Nakamichi CR-3, it records crystal clear, strong and is rationally built. Even good Sony ES models with laser amorphous heads should be taken into strong consideration; Yamaha K-1000, K1020, KX-800 and 1200 I think they are optimal, I haven't owned them but they are models that I would like to try; I would avoid Pioneer CT-F757 and similar, they have an interesting mechanical group but otherwise they are plastic, boring recording and playback, slow as microdynamics. Also avoid Teac 5000/7000 etc. they are built very well but the sound is really confused and muddy, I hope the owners don't hold it against me.... There are many models and each one has precise characteristics so I have limited the field to the ones I know good to give you a valid suggestion, cordially.
