I use playlists to elevate new artist music I want to listen to to the top of the stack (so to speak), I never use it for making compliations.
When you have 80GB of music on your X1player/ipod, scrolling through the artists to to get to those new albums you just sync'd, becomes a time chore in itself. Make all your new music into artist titles playlists, and you get a convienent list of what's new for you.
The 'media player that shall not be named' does this, but you can't sync a X1 on it.
Minor gripe as I said. Music Bee is exceptional software. I am really suprised that the FiiO team haven't embraced it as compatiable with their X1 product.