I sort of think their coat, whether long or short, is low maintenance compared to the other issues that come with having a Yorkie in your life. Don't want to discourage you but these dogs are like no other...which is why this is such an active website.
I got this information off of the Yorkshire Terrier Club website.
http://www.ytca.org/breeder2.html
If the link doesn't work, go to
www.ytca.org and click on breeder contact. good place to do research about the breed.