Okay, before you mention it, yes, I've seen the Rockbox buying guide.
I was just wondering what everyone thinks of the state of recording in modern MP3 players, particularly as it relates to Rockbox. I've looked around a bit and it seems like MP3 players with line-in recording are few and far between these days, and the ones that do have it are quite limited in their capabilities -- usually with a max recording bitrate of 128kbps. That's almost certainly a software limitation, though, so with Rockbox it should be possible to record in any bitrate or lossless as you please.
So then here's my more direct question: Among currently supported players, and among players that seem to be on their way to being supported (in active development, bootable, making progress), what are the best ones in terms of line-in recording? As far as I can tell the iRiver h1x0 and h3x0 are the kings among currently supported players, but is there anything newer that's up-and-coming in Rockbox development?