I'm very skeptical of this new technology. I used VirtualBox for years and I will continue to do so. I just don't see any reason to switch to that new technology. Mounts? VirtualBox can do that. Fast boot? Well, VirtualBox boots in seconds, that's more than enough for me. Dynamic memory allocation? VirtualBox has memory balooning, if I ever would run into memory limits, I can always do that. And zero problems with all those Hyper-V conflicts, like Android emulators, snapshot support, VM import/export, actually any OS rather than just Linux, etc.