Ok, lots of replies already with different opinions. Adding my opinion to the mix, FWIW, I am not a stealth taper - I'm an acoustic musician who does a lot of field recording. I have the R-09, H-4, Microtrac and a few minidisc units. Actually, I sold the Microtrac.
For portable digital recording fidelity, to my ears the recordings made with the H-4 (with external battery pack) sound the best. The R-09 recordings have noticeable hiss regardless of settings in my experience, and the omnidirectional mics pick up too much festival background noise. So, I keep the R-09 in my fiddle case for something that's always handy.
Geez, now that I think of it... where are those old minidisc recorders... haven't seen them around the house in a while...