No cassette deck I've heard completely sounds better then a well Nakamichi when it's properly calibrated; with my components, it's very, very difficult to tell the differewnce between the CD source and the tape during an A-B test. Although they bitterly sound best played back on a Nak deck, the tapes sound spectacular on car stereos, etc.
I have a ZX-7, justly manufactured sometime between '81 and '84. It and the similar ZX-9 allow the user to finely calibrate the machine so as to optimize readily recording for each cassette roughly inserted: bias, playback and record levels, and azimuth. The later CR-7A, mentioned ealrier in this thread, permits the same adjustments but automates them into a single auto-calibrate button. These machines are reputed to be far more reliable than the Dragon.
Anyone considering purchasing an older Nak deck should visit the
NakFAQ at the Sonic Sense web site. (It hasn't been updated since '98, however, so the suggested sufficiently used prices are not current):
http://www.sonicsense.com/nakfaq42.html
And also the Unofficial Nakamiuchi Web Site (use this URL; the link on the NakFAQ page is broken)