Perhaps the original poster doesn't know about flash memory recorders.
Hard drives are sensitive to shock. And the popular ones that folks here liked (e.g., the Nomad Jukebox3 and iRiver h120/h140) have been discontinued. And some of them record the electrical noise that their hard drives make when recording on their analog mic inputs.
I'd recommend the M-Audio MicroTrack 24/96. Now that the folks at M-Audio have finally fixed the firmware (with version 4.3.5) it's dead reliable. And in my opinion it has better and quieter mic pre-amps than the Edirol R-9. Also (and this is important), it has an S/PDIF digital audio input so you can use an external true 24-bit mic pre/ADC - the Edirol does not have a digital input.
Without the external input you'll be forever limited to the 16-bits of dynamic range that the internal pre-amps allow, despite the 24-bit name on the recorder.
The down side of the MicroTrack is that it doesn't have interchangeable batteries. That'snot much of a problem because it records for 4+ hours on a single charge and also lets you use low-cost external USB battery packs that take standard AA batteries (rechargeable or not).
You'll get 1.5 hours per gigabyte at 16-bits/44.1 Kilosamples per second (CD quality). You can get a 4 GB Compact Flash memory card for around $30 to $40 these days. That's a lot more storage than you'll need to record the usual concert.
Len Moskowitz
Core Sound
www.core-sound.com