I was very impressed by the Child of Eden trailer. While it didn't show off much of the actual gameplay, it has a great sense of style and the music seemed quite good. The trailer also gives off an impressive sense of speed that will likely permeate the entire game. While I have never played Rez (I really should get around to that), I can definitely see the similarities and will very likely pick this game up the moment it comes out if it is even half as amazing as the trailer makes it out to be.