[katnapz]

Guess someone should add the comment that if possible to use a cassette deck with adjustable playback azimuth if playing back on a deck that the tape wasn't recorded on. This can make a noticable difference in audio transfer quality. The Nak MR-1 mentioned above doesn't have this feature (it does have pitch correction ability though).
Some decks can have the azimuth adjusted by a "poor man's method" of taking a screwdriver and turning the adjustment screw but this can't always be done...depends on the deck. There's instructions on the net if you Google.
The CR-7A allows manual adjustment and the Dragon is automatic to name two Naks with playback azimuth correction if you're into that brand.