Hypo has some cool sounds/vibe, but goes a bit wonky for my taste.
Triptonic I like the slight twisted stuff going on darker vibe, but some nice lighter stuff contrasting in there too. Could do with better development/Journey tmaybe. But as someone said above, would sound great at a club.
Reward Chemicals has been growing on me more and more. Sounds the most Sleep D to me, based on past releases. Again, its the lighter delicate sounds that they use that bring the personality and finesse.