I would have BOTH of your uncles tested for Y-DNA and MtDNA as well as AtDNA.
Paternal Uncle: Y-DNA is the same as your father's Y-DNA and his MtDNA the same as your father's MtDNA. You have no way to get any of these results by testing yourself.
Maternal Uncle: Y-DNA will be the only way you can have the male line on your mother's side. His MtDNA will be the same as yours.
I've used Family Tree DNA for these.