Her deep range, and her little dreamy breathy voice she does gets me every time. I love how she can sound really girly when she's excited, but then get all "husky" like. I think thats the word for it.
I think Star's voice wasn't very well worn in at first, i agree. It WAS her first voice role. She's gotten alot better. I think Star's voice is sort of distinct, and might explain why some older gents are into her (considering she sounds like she's in her mid 20s-30s)