The app is not without issues. The first couple of versions of Move to Apple Music were a bit buggy, but the developers have worked very hard to fix these issues, and have released a number of updates in the first few days of the app's existence. The time it takes to import everything may throw you off; when I first ran the app, it told me it was going to take 188 hours (I have some 22,000 tracks in Spotify playlists). I then decided to only import a few playlists at a time, rather than wait for everything to get copied.
I'd like the matching to be better, but I understand that, especially for classical music, this isn't easy. I have lots of long playlists of classical music on Spotify, many of which were compiled by ulyssestone, on his Spotify Classical Playlists website. I understand the limitations of Move to Apple Music, and I only wish it could be more efficient.
If you've got a music collection on Spotify or Rdio, it's a no-brainer to spend $5 and have much or most of it imported into Apple Music; it'll save you a lot of time. You just need to be patient.
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