Thanks. I'm used to an ancient Archos hard disk player running Rockbox, that was file/folder navigation only and I could navigate it ok, just by having a folder structure similar to my physical record collection (alphabetical by artist or composer basically, then by album name within an artist folder, then by track number and name with an album folder). Unfortunately all players currently made seem to mess something up. I'd be using it for mp3 listening with an 8gb card, which is enough for a good sized collection. For recording I'd either buy a second card or else just erase the card and restore it afterwards from my computer. Anyway what I basically want is 1) a flash player, hard disks are too much hassle; 2) 8gb or more capacity, right now I have a 4GB Sandisk M260 which is sort of tolerable so if I'm going to switch, I want a capacity increase; 3) runs on AA or AAA cells, I have a hate affair against proprietary batteries which is why I refused to buy a Microtracker; 4) can (at least optionally) navigate by folder and file instead of by id3 (my Sandisk is id3-only and it's a big pain).
The R-09 is about the same price as a current Ipod (of course I hate Ipods) so the cost isn't that out of line. Not that I have money to burn or anything like that, but it's priced about like a midrange digicam and I don't have much reservation carrying one of those around.
I'm thinking of getting a Frontier Lab Nexblack, which is CF-based, about $80 for the player (no memory) and $300 for a 16GB CF card, putting the total about where an R09 is, but I wouldn't be able to use the CF card for recording in an R09. I'd be able to use it in my PMD660 but I'd hoped to sell the PMD660 and get an R09.