Caramunich II is much too dark and probably a bit stronger in flavor than the Caramel Aromatic. Weyermann used to make a CaraVienne which was a pretty good match for the color and flavor description. I think the closest that Weyermann has right now is the CaraRed which matches the color level of the BestMalz Caramel Aromatic.
Flavor profiles are another story. BestMalz describes the Caramel Aromatic as "dark, strong caramel with light almond and nutty notes."
Weyermann CaraRed is described as "malty-sweet with notes of caramel, honey and pastry."
The BestMalz flavor descriptor is better matched with CaraAmber "Toffee, caramel and bread notes." and will only be a slight bit darker, or you could go the other way, a bit lighter, to CaraBelge which lists the flavor profile as " Notes of caramel, dried fruits and nuts (almonds)." Maybe a blend of the CaraAmber and the CaraBelge would give you more of what you are looking for, but it is difficult to predict without doing a sensory evaluation.
Hope this helps.