"If it's just voice, take a look at a cheap Olympus DM-10." Although I want to record voice, this is a too low quality recorder for me. The conference will be heard by many people and I want to get a decent quality (at least). "No, you cant record to MP3 with any Hi-MD recorders - only to Hi-SP (256k), Hi-LP (64k) or PCM." Therefore, I am planning to record into Hi-SP (256k) mode. For a voice recording, it will be very good and will guaranty a limited file size, so that the download from the Hi-MD to the computer will reasonably fast. "I've never heard a good mp3 hardware recording (I also had an Archos Jukebox). I've tried iRiver and Creative Nano plus as well. A good Lame/Ogg/WMA(!) encoding at similar bitrates will beat them hands down." You are really demanding... For me, when it worked, the mp3 files produced by the Archos Jukebox Recorder were satisfying. When it worked... But, many time, it failed during the recording. The reasons were : batteries too low, bugged display, box suddenly turning off, mp3 file not saved, etc... That is the reason why I want to buy another recording device. "Also, if you plan on recording live, invest in good microphones - they will make all the difference." I completely agree with you ! I previously experienced low quality mics and the results are poor, poor, poor. I will probably use an studio mic (Senheiser B2 Pro) with a pre-amp (Presonus) and a K&M microphone stand. This hardware has an excellent quality, may be too much for my needs : but I like to use the best hardware as I can so that I can get satisfied with the final result. I can borrow this from a friend of mine so it cost me nothing, except time.