Sounds like you may need a better antenna more than a top quality tuner. That said, though, you may find this thread to be of interest.
Among quite a few vintage tube tuners I have owned, including two Marantz 10B's and the comparably expensive REL Precedent I currently use (in conjunction with an H. H. Scott LM-35 multiplex adapter/stereo decoder), the best relatively inexpensive (I suspect <$500) tuner in my experience has been the combination of an H. H. Scott 310D tuner (mono in itself, but providing a multiplex output jack for connection to an external multiplex adapter/stereo decoder) with a Fisher MPX-100 or H. H. Scott LM-35 or 335 multiplex adapter.
Of course, condition is a HUGE variable when it comes to vintage tube tuners, and many specific models (including the ones I suggested) are likely to require a good deal of patience to find, especially in top condition.
Regards,
-- Al
Among quite a few vintage tube tuners I have owned, including two Marantz 10B's and the comparably expensive REL Precedent I currently use (in conjunction with an H. H. Scott LM-35 multiplex adapter/stereo decoder), the best relatively inexpensive (I suspect <$500) tuner in my experience has been the combination of an H. H. Scott 310D tuner (mono in itself, but providing a multiplex output jack for connection to an external multiplex adapter/stereo decoder) with a Fisher MPX-100 or H. H. Scott LM-35 or 335 multiplex adapter.
Of course, condition is a HUGE variable when it comes to vintage tube tuners, and many specific models (including the ones I suggested) are likely to require a good deal of patience to find, especially in top condition.
Regards,
-- Al