I use both my iriver H140 rockboxed (last new one on ebay purchased last year
) and my Sony MZ-RH1.
Today I started a HI-SP recording when I left for work and after 7h56min at the office it saved the TOC and still 1/4 of the battery was ok. Charging the LIP-4 "gumstick" takes 60minutes.
I like the RH1 for it´s mic-input...great for taping lectures or comedians.
I also did some HI-SP concert-recordings which would have sounded great IF I had the right mics(cardioids) back then.....instead of omnis....too much bass
.
Now I use MM-HLSC-2 Sennheiser cardioids or my SP-CMC-8 cards together with my 9V-bbox or my MM-preamp, depending on what I´m going to tape.