Ah, see, my experience is exactly the opposite of yours; I don't listen to the ChilledCow streams, but I do listen to the Chillhop playlists (and in fact purchase the seasonal essentials collections on vinyl) and one of the reasons I like them is because there's a lot of curation that goes into the playlist and they tend to feature artists that I end up liking - Blue Wednesday, Purple Cat, Joey Pecararo are all reliable artists in the genre for me.