Ì am in the process of converting all of my old cassette recordings (over 30 years of recording) onto Mini disk.All new recordings are done on the Sony MZ-R37. A truly magnificent machine.
The results of the transfers are also magnificent. I can control the recording level nad exclude the slight hiss in the bsckground. I didn't expect enhancement but what a wonderful side effect.
Definitely go for mini disk. Save up for it rather than buy a cheaper tape unit - even if it takes you a year. It will be worth the wait.