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The Kenwood KT-6040 is potentially one of the most selective non-RDS FM tuners. This is mainly due to the KT-6040's series of eight filters.

Kenwood KT-6040 AM/FM tuner specifications

Rotary tuning dial.
25 kHz tuning steps
Eight IF filters
Tuning range: 87.50 - 108.00 MHz

FM SECTION
50 dB Quieting Sensitivity
Mono - 15.3 dBf
Stereo - 37.2 dBf
Usable Sensitivity (DIN at 75 Ohm)
Mono: 0.7µV
Stereo: 25 µV
Selectivity (unmodified)
(DIN +/-300 kHz 80 dB (NORMAL))
(DIN +/-200 kHz 80 dB (NARROW))
Image Rejection Ratio (at 98 MHz)
90 dB
IF Rejection Ratio (at 98 MHz)
110 dB
Spurious Response Ratio (at 98 MHz)
100 dB
AM Suppression Ratio
68 dB
Signal to Noise Ratio (DIN weighed at 1 kHz)
Mono - 83 dB (85.2 dBf input)
Stereo - 76 dB (85.2 dBf input)