Veertu looks promising (http://veertu.com/)
I'd like an alternative to VMWare Fusion but don't want VirtualBox.
Other challenge is Fusion allows me to transfer VMs to my home ESXi box pretty easily, so I'd lose that too by switching
Veertu is way less featureful than Fusion but the latency means it's INSANELY fast. Windows 10 installs in sub 5 mins, but more to the point it just doesn't suck due to lag like Fusion did. I actually test on Edge now.