Many companies produced great cassette decks, most claimed big Nak killers, few did it though, some of the top ones came out late when cassette was dying and sported Dolby S. Many also never made it outside Japan so not well known, all were amazing piece of engineering and could demonstrate what the cassette was capable of, you cannot go wrong with any of these,
Nakamichi-ZX9, CR7, Dragon
Luxman/Alpine-K05/AL95 (same deck)
Revox-B215, B710
Pioneer-CT95, CT-A1
Sony-TC-K777ESII, TCK-A7ES
Tandberg-TCD3014
Akai-GX-F95
Technics-RS9900
Teac-Z7000
Regret selling my TCK990ES (K555ES in Japan).