I think most folks would who owned a Saxonia would wear it far less frequently if they then bought a Lange 1. Would you really wear the Saxonia after buying the Little Lange 1? Sounds like you're questioning that.
If I had to choose, I'd sell the Saxonia and keep the Moser.
The Little Lange 1 is a really wonderful watch! Having a small wrist and owning one of these relatively rare pieces that fits better than the far more common 38.5mm size is a real treat. It feels like an extra-special, custom-made piece in some regards.

Little Lange 1 (36mm) and regular Lange 1 (38.5mm):
