You are like the first person I've ever met who likes Asian accents (Cantonese to be exact)!! O.O Most people make fun of it...
I enjoy listening to the Italian accent when it is not too thick. Of course, like many American females, I love the English/Australian accent.
I used to like American English accent a lot. But after getting used to it , and watching Downton Abbey, I started having a crush on British accent, the way they pronounce and the rhythm got me imitating.
I don't know much difference between Australian accent and British one. I know the former pronounce /ei/ as /ai/, but they mostly sound alike to me. So yeah , Australian accent is fine too.