The choice will not really be Windows or Linux, it will be whether you boot Hyper-V or KVM first, and Windows and Ubuntu stacks will be tuned to run well on the other.
At a glance comparison of every major Explorer release
Some Task Manager lore: I'm the Microsoft (Redmond, '93) developer that wrote TaskMgr at home in my den in about 1994 and then the NT silverback devs let me check it into the main tree even though I was a greenhorn at the time.
Imagine running your favorite Windows applications and drivers in an open-source environment you can trust. That's ReactOS. Not just an Open but also a Free operating system.