The Rift and Vive have a worthwhile competitor, at least when it comes to price.

Microsoft's Build 2017 keynote speech on Thursday brought virtual reality (VR) and mixed reality fans a pretty big surprise: Windows Mixed Reality is getting some cool new
motion controllers to go along with the headsets.
Also announced was a $399 bundle containing the Acer mixed reality headset and the new controllers. A that's a pretty big deal. Let's have a look at exactly why this price is meaningful compared to the Oculus Rift and HTC Vive.
Full story from the WindowsCentral blog...