I used to use Deezer, but after a long suffering issue with their Flow system, which is supposed to suggest new music based on the artists you already like / listen to, I found too many times were artists I hated being suggested time and time again, to the point where I raised it as a support request on their forums, and even Deezer themselves admitted that the Flow feature did not really work. Switched to Spotify and have had a great user experience ever since.