I'm Italian and I won't rate mine, sounds as information vehicule to me.

>Shit Tier:
Dutch & Flemish, take every bad sound of English and German and merge it together, there you go;
Bahasa Indonesian, Tagalog, gtfo;
Bengalese, Hindi, seriously: fuck you;
Ooga booga languages.

>Bad tier:
Romanian, sounds like the unwanted child between Russian and Spanish;
Jewish, I just hate you but still pretty mysterious-sounding.

>Not-so-good tier:
Spanish, very bland;
Chinese, Korean, too much Ching-Chong.

>OK tier:
Arabic, sometimes sounds too ooga booga but still badass;
French, cool but not practical and so bad when spoken informally;
English, satisfying to speak, not-so-good to hear;
Danish, a tiny bit too much potato in mouth;
Norwegian, pretty cool but sometimes bland;
every slavic language.

>Cool tier
Swedish, badass;
Portuguese, very rough, direct to the point;
German, just wonderful sounding;
Russian, ohh yeahhh;
Cantonese, badass;
Japanese, although points loss for anime culture;
Iranian/Farsi/Persian, velvet to ears.

Ok Swahili and Xhosa are super cool.

I also like french creole but that's it for nogs languages. Wolof sucks.