Kylo Ren has a seemingly "crude" lightsaber. This is due to a lot of things, but it seems to hold up pretty well, even against a lightsaber made by a Jedi (almost) Master. But throughout the movies, all lightsabers are basically shown to be indestructible, other than at the hilt.
So then what are the advantages of having a "refined" lightsaber, other than showing that you know how to build one? Are some lightsabers not only better quality, but actually stronger or more stable than others? Has there ever been an instance of a lightsaber blade "breaking" because it was weaker during combat?
This is different from this one because I'm not asking specifically about what makes Kylo's lightsaber different (I already read that question, that's why it's linked). I'm asking specifically if there are combat advantages to having a really good quality lightsaber.