this wave recorder

sounds like one of the better recorders out there - both for quality
(24 bit wav) line-in and convenience - records directly to a flash card.
although its priced around $450 US.

Id say the mini-disc technology is obsolete, (though the md users here would probably disagree) At the last fiddletunes festival in Port Townsend I met a number of former md users who switched to the iriver fp750 (last years model)

I got one myself, it has built-in fm tuner, voice recorder, and line-in
(use an external stereo mic in the line-in and the quality is very good) Stereo recording at 44kh 165kbps
no moving parts so no motor noise -which is what md users complain about and end up having a long cord for the mic.

great for recording tunes at sessions, easy to upload to pc
Ive used it to record from records and tapes directly to the line in as well.
uses one AA battery