bead question

I am planning on adding some more beads to my EdgeStar and am contemplating using Shilala's beads. I currently have HF beads in bags and was wandering if the two types of beads could be used together. I have heard good things about Shilala's beads and thought I would give them a try, but I don't want to start completely over purchasing a ton of new beads. What is the consensus...use together, stay with HF or make total switch to Shilala?