Ive just done this exactly because Spotify have put up their prices
Currently trying Apple music on a 1 month free trial
Things ive noticed so far
Apple music is slightly quieter than Spotify (ive checked all my settings and checked online)
Apple music on my Alpine 9in touchscreen carplay headunit does not allow me to see a list of tracks on the album im listening to so i cant scroll through and select a certain song, i have to skip each song to find the one i want (need to look into this more)
Apple music Sound quality seems to be better espcially with Dolby Atmos turned on
Once the Apple music free trial is up im going to give Tidal a try