I had a Sony Mz-R55 which broke.. Don't get this, because the battery time is horrible, and it always went down on me...
I recently got a Sharp MD-MT99 used on here for about $70 with all the original accessories. I just taped a show with it, it's so great..Mic In, Line In, Small, Compact, Rechargeable Battery that lasts 7 hours..I'd recommend a Sharp (either this one or the MD-MT15 which also nice). All the Sharp's you can adjust the recording level on the Fly as well, which many Sony's don't have...
I am currently getting Giant Squid Cardroid's with a SP-SPSB-1 for my Sharp, so I should be good to go..
If you want to get a cheap MD, look @ the yard sale section of this board, I have already gotten 2 great deals from there!
Cheers.