Sony NWZ-A866

good mp4 player.
First of all, i dont care about video and photos, so i dont know if it is good or bad.
I chosed this model because of 32GB, and because i am a fan of Sony, for a long time, for portable audio devices, since walkman, diskman, MiniDisk, CD-mp3 player, and I am in 3th mp3 portable device from Sony, and I like. I dont take good care of devices, sand, falls, down stairs by imself, is the usual treat they receave and they almost leave forever... Until two waves from the ocean killed last 2 units... (never sleeps using sony mp3 players near the water) lololol
I tryed ipod and creavite nano, and sony last longer and survive better my maltreatment. 
The menus are easy to use, 5 stars.

The quality of sound (with stock phones) are great, 5 stars

Battery is medium, I has used to last sony devices with 45hours of autonomy. But for this size of screen, its ok... 3 stars

Easy to add musics from PC, only have a missing option that no sony have and creative had. The possibility to delete a song or album without connectiing to PC. 4 stars

For me only have 2 problems, one, not a big problem, its a bit big for a "only mp3 player", because i only use it for listen mp3. 
The biggest problem for me, is the poor power at maximum power, when the sound is louder, if I can call this louder...

Its less loud at maximum volume then the other 2 sony devices, or creative I had. For me this is the biggest problem and the only problem i can complain