I owned two sizes of the "Junior", the small and the large. I ended up selling the large ones to a friend who used them for years before selling that bike. I still have the small ones but their mount is on an old Honda 750F I have that has not seen the road in several years, due to a variety of reasons not relevant to this discussion.
I put over 50kmiles on the two sizes of Juniors and they were excellent. They did not leak in the rain and remained securely fastened throughout their use.
I think that if you are going the aftermarket bags route and do not want metal a la Jesse or Touratech, or Holan, then Hepco & Becker would be an excellent choice.