[LAU] Portable Digital Recorders

Hi there, I'm interested in getting a portable digital recorder, something that can run on batteries or ac power (presumably through a wall-wart?), that has built-in stereo mics, and something which will take 2-4 line external inputs. I've seen a lot of such things come on the market in recent years. Many have SD or SDHC cards for their audio memory, which is fine with me as I have an SDHC card reader in my computer. If I get one with a USB interface it's my _requirement_ that it operate with Linux over USB. The same would go for firewire, though I haven't seen any of those. Some units record only in lossy compressed format only, while others have uncompressed formats available. I would prefer the uncompressed format to be available. I'd also need at _least_ 4 hours of stereo 44.1kHz at at least 16-bit, with something like 24-bit being more desired by me. I'll be doing remote recordings, then bringing the audio home to chop up with Audacity and/or Ardour, then authoring the result to CDs. So, what works well with Linux and works well in general? Thanks people! -- Kevin