I've never noticed enough of a difference between Arkaos or Resolume that really makes one better than the other. Only thing that pissed me off about Arkaos was when the event recorder would choke. Don't know if that ever got fixed but don't really care either since I record all my Arkaos events in Sonar. BTW, it is possible to get Milkdrop running in either Arkaos or Resolume with a little driver trickery, so long as your CPU and GPU can handle it.