I don't really listen to Christian music as that means seeking out a Christian radio station which I don't have any interest in.
I will say that the quality of Christian music has generally improved. 30 years ago, it was generally obvious that Christian musicians were a second tier to mainstream pop artists; however, I think that gap has narrowed. However, it is still their.
In a way, it seems strange that there has not in recent history been a Christian Musician who has made a truly big name for themselves. Perhaps there is a factor of writing/performing music in service to a greater being which restricts someone from allowing themself to be idolized the way any top musician ends up being?
Of course a lot of top musicians are Christian, but that aspect is not so front and center to prevent them from fully showcasing their talents.
Just thinking aloud...