Ranked in these QuestionsQuestion Ranking
Pro Loosely coupling allows for lots of flexibility
Aura is a loosely coupled collection of independent libraries with no base classes. This allow for extreme flexibility in choosing what libraries are needed.
Pro High quality, well tested code
This framework has highly tested code. It is very reliable. In fact, most of its libraries have gone through scrutinizer-ci.com and they all score very high.
Con Small community
Aura's community is still relatively small and it can be a little hard to find help or guides if you get stuck somewhere.