Which 32gb flash-based mp3 players support rockbox?

[willemmerson]

I am looking for a 32gb flash based (could be a CF-drive mod theoretically, or 32gb micro-sd card) MP3 player, ideally one that is still available to buy new. Other than that, it has to be fairly small and obviously run Rockbox. Also would help if it was a fairly mature port. Any ideas?
Also might be quite good to have a microphone input or decent mic, but not necessary.