Musing.io is looking very promising. Apart from the fact that it is fun asking and answering questions while having fun, you get rewarded for it. Some people even earn more in musing.io than on steemit and with the dip in price which is discouraging people from researching and making quality posts, so many are opting for musing.io where you don't have to type 1000 words before you can earn just $1.
Musing.io has a very strong team and network and the more the word is getting out there, the higher the number of users and so yeah musing.io will soon be greater than steemit.