Forget it. They said that they were going to bring them out and then changed their minds. Really sucks as I was hoping to run both of them on 8S for a few packs and then go back to 6S. Not so keen on it now.
Why not? the 1520 on 8s is about the same rpm as the 2200 on 6s? Shouldn't be a problem at all. And the 1518 will only be a bit more.