I'll begin by saying that I had already returned this headset due to not being satisfied enough with it. It's not an awful headset, but I can't say that I can recommend it, at least for VR enthusiasts.
I would describe this as a cheap (when it's on sale) headset for beginners that are new to VR. Setting up the headset was very simple; the headset only requires an HDMI port and a USB 3.0, and since the headset had built-in sensors for inside-out tracking, there's no need to set up external sensors. Once plugged in, all I needed to do was to install the Mixed Reality Portal (and the plugin for SteamVR), connect the controllers, set my room dimensions, and I was ready to dive into virtual reality. At most, the process took maybe 30 minutes to an hour. The headset itself has enough accommodating space for my glasses without bending the arms, straining the frame, or scratch the lenses. Because of the inside-out tracking, it's easy to set the headset up for seated usage, like if you had wanted to watch a movie in a virtual theater or for gaming, sit in the cockpit of a Sidewinder in Elite: Dangerous. To put it simply, easy to set-up, less cable management, and a causal-friendly virtual reality experience.
Now, I did mention that I returned the headset due to unsatisfactory. One of the problems that I had with the headset was the cable length. According to Acer, the cable length is 4 m (or around 13 feet). For reference, the HTC Vive cable length is 5 m (or around 16 feet) as well as the Link Box to the PC which is an additional 1 m (around 3 feet). I only stand about 5 or 6 feet away from the computer, but if one is looking to play in a room-scale environment, you'll have to purchase cable extensions. Unfortunately, I can't say whether cable extensions will work with the headset.
My biggest problem with the headset is the inside-out tracking. The headset has an integrated pair of tracking sensors on the front, so to keep the tracking steady, you would need to keep the controllers in front of the headset at all times. Otherwise, when not in sight, the controllers lose tracking and stay at their last known position. However, if you move the controllers back into view, you'll regain control. These Windows Mixed Reality headsets use predictive tracking algorithms to map the controllers' locations depending on the angle of the controllers in relative to the headset - for example, if you reach behind your head, the headset will program the trajectory of the controllers and recognize what path the controllers are going, like if you were going to reach for a weapon holstered on your back. Though, it's not perfect and may not detect the proper inputs. I play H3VR on occasion and when I attempt to throw something, I have to keep sight of the controller at all times to throw it. Otherwise, it'll lose tracking and stay floating until the headset detects the controllers. In addition to the controllers, the controllers are designed in a way that they use bright white lights integrated on the outer ring to which the headset uses for tracking. These lights consume so much battery that my controllers started dying within a week of usage; I noticed that they'll sometimes power off on their own. These are non-rechargeable controllers. They're powered by two AA batteries per controller, so a total of four AA batteries. To compare, the Oculus Touch controllers each have a single AA battery, and the HTC Vive wand controllers are rechargeable via micro-USB. The Oculus Touch and HTV Vive controllers have little to no external lighting that would consume battery life. If you're considering this headset, I'd recommend getting rechargeable batteries. Also, these controllers require Bluetooth to connect; the 'connect' functionality of the controllers are represented by a very small button after opening the battery compartment. If your PC's motherboard doesn't come with Bluetooth capability, you'll also need to purchase a Bluetooth adapter dongle.
It really depends when asking the question of: "Which VR headset should I buy?" If you're looking for a headset that's not to difficult to set up, something that you can take with you if you have a powerful laptop, and friendly enough for curious friends and family, that is, if you're willing to invest in extension cables for a room-scale experience, rechargeable batteries, and a Bluetooth dongle, I'd wait for a discount. If you're looking for a more refined experience, I'd look towards the new headsets from Oculus.