AIMP has:
1- Converter (VBR converting is very important for me, and I use it a lot, and it supports that fully)
2- CUE sheet support (you can edit the cue in the editor, save changes, refresh in AIMP and play, and you can see all changes in real-time, that's awesome for me!)
3- Lyric support. I asked AIMP authors to add an option to play lyrics with the sound simultaneously, and they said that's on their to-do list. I had more requests (since version 3), and they have added most of them, and they never said no!
4- Powerful Sound Effects (Like a DJ deck)
5- Powerful Tag Editor
6- Powerful plugin support
7- Classic and modern flat skin support (I love some of the classic visual equalizers)
8- Great app size (about 10 MB)
And many more features I barely use!
... I think, we should get some money from them (for so much promoting of their app), otherwise, everyone thinks that we are the AIMP's author ourselves! I wish I was... 
?!
what jriver do to me? don't let me started... hahahahaha 
