You know, with the exception not being low-shedding, I would strongly recommend looking at Cardigan Welsh Corgis. They tend to be much quieter than the pems in my experience (none of the eight I’ve had have ever barked unless someone knocked on the door or a squirrel came right up to the window), and they are excellent for both obedience and agility. Very loyal and what’s great is that they can sleep all day and be ready for action in a moment’s notice.
They are very clever–you will have your spats where they will think they are supremely right and you, oh poor human, are dreadfully wrong. But that said, I have loved working with my corgis in the obedience ring.
About the shedding: yes, they do shed a lot–BUT, they are the easiest dogs to groom. Just a get a slicker and use it on them weekly in front of the TV. The coat is so low maintenance in comparison to many others. Just brush and go.