Just got mine. Quick impressions, from a usability standpoint:
1) case is ludicrously weak. not sure why they even bothered including it.
2) love that they included 3 screen protectors and already left one applied. Not so happy with the pull tab on the protector, but managed to get the "outer casing" off with a nail and leave the protector on.
3) The class 2 16 gig microSD card i put in there didnt get recognized initially. Dont know why. I reformatted in a card reader as fat32 and now it works fine.
4) I'm getting 5 megabyte/second transfer rates. Really? I mean i understand keeping costs down and leaving this thing at a paltry 8 gigs of space when it ships. But if i'm transfering 64 gigs of music at 5 megabytes/second, thats an all night task. That is something that needs fixing. Inexcusable.
5) No headphones included. I do understand the target market, and this decision makes sense, but this also seems like a weird decision at the same time. I got a pair of brainwavz R4 with mine free with purchase though, so maybe that is some deal they worked out.
6) The menu options need to be worded differently. I'd like to see some american devs take a crack at this firmware. Perhaps give rockbox a chance with this. This firmware's current state is pretty poor. "Category" is the option we are looking for, there is no way to reorganize or add/subtract menu items. I'd like to see artist/album/songs/genre on the main menu.
7) This is a "problem" with all players like this, but they treat the internal and external storage as 2 seperate units. Luckily, they have a media library that manages to keep everythign as one contiguous unit. So thats nice.
8) I absolutely hate the sorting algorithm on this. Queen has 3 albums: platinum collection disks 1, 2, 3. Going to Artist>queen, only shows up a list of SONGS, not a list of albums. there NEEDS to be another menu here that says "all songs" or lists the albums by that artist instead of simply enumerating all songs.
9) On the same note, listing all songs should be done either by directory order (recursive) or by album. It should not be done by alphnumeric. Right now, if I have 6 albums by 1 artist and I go to that artist's folder, I get 01 track.mp3 01 track.mp3 01 track.mp3 etc. 6 times. then 02 track.mp3 02 track.mp3. This is unacceptable. The only way around this is to scroll to the name of the actual album.
10) There needs to be an option to set how fast to scroll names. I have all 4 "pirates of the caribean" albums. That name will not fit on the screen. But to listen to it, i have to sit there and wait to see which album i'm currently on while it sloooowwwwlllyyyy scrolls across the screen. Its NOT a quick enough scroll to tell by the first few letters or I wouldnt have mentioned it.
Fiio: If you could, please open source this firmware or something. Community development on this sort of project could yield some massive and ridiculous gains and skyrocket sales of this device. Especially if it could be rockboxed.