I personally prefer the Yorkie 100%. I wanted one over a decade before I got her. They're so feminine and pretty. Biewers look(to me) like a large fluffy mix dog. If I didn't know from reading YT and saw one, I'd assume it was just a mixed breed dog. For some reason they always seem so much larger too(maybe their hair if fluffier?)
Now on the other hand, I think chocolate yorkies are adorable. To each their own