I have been playing on Cake, and its skins, for a couple of years. I also have never deposited on Cake or it's skins. Recently, Poker Host, Doyles Room(both former Micro Gaming skins), and Poker World(formerly on Gold Chip) have moved over to the Cake Network.
Also, I was lucky enough to get rake back on Cake and Poker World. I do not think Doyle's or Poker Host have rake back. So, I will, probably, stop playing on Poker Host and Doyle's in the near future.