I've tried a number of apps/programmes over the last week and have finally come up with something that seems efficient!
I'm uploading tracks to Google Drive (playlist; highlight tracks and drag to the drive) and using Flac on my iphone. Big advantage is that Flac plays m4a which itunes never could. It works well with GD and other clouds. You can also download what you want to the phone and leave the majority in the cloud. So far so good
Seems to be good now although slightly long winded. But I'm out of the clutches of iTunes and I'm happy with that
The best way I've found to use Google Drive with Flacbox is this:
In GD, New/Folder
Create a folder for each playlist
Go to BeaTunes
Open a playlist / copy the tracks and drag and drop to the appropriate folder in GD
Open Flacbox on phone
Go to Playlists and setup playlists as required
Connect/ GD (under cloud services)
Shows MyDrive and the folders
Hit the dots on the right of the folder
Add to playlist
Flacbox is a good looking player that has a few goodies that most players don't have - playback speed, equalizer, song loading etc
It's worth a try if you want to work folder based with BT but also need playlists transferred to your phone.