For Aros I always recommend Savinelli Cavendish. This is a great Aro with a fantastic aroma, pleasant room note, and just enough backbone so that you know you're smoking tobacco.
I also always recommend Gatlinburlier's Mountain Mall Mix. I always get compliments on the room note from smokers and nonsmokers alike.
More controversially, I'm also a fan of Stanwell Melange. Amazing, unique apricot aroma. My wife loves to smell it in the tin. Constantly. I've been told it will ghost a pipe, so I just dedicated a cob to it.