HTC & Valve

 

HTC Vive is a virtual reality headset developed in a co-production between HTC and Valve Corporation. When users equip themselves with the sleek hardware, they are transported to a completely interactive virtual world. Available to consumers in early Q2 of 2016. The Vive is a tethered experience, meaning it requires a separate PC (and a 15x15 ft. space) to enjoy the experience.

If you cant wait until later this year to get your hands on one of these units, schedule a time to come on by SteelehouseVR and experience the Vive yourself.

I wore the Vive VR headset and didn’t want to take it off.
— The Verge

Oculus & Facebook 

The Rift is head-mounted virtual display developed by Oculus VR. After purchasing the technology for $2 billion, Facebook founder and CEO Mark Zuckerberg said, "Mobile is the platform of today, and now we’re also getting ready for the platforms of tomorrow." The Rift is best used when wanting to display fully interactive 360º content. Like the HTC Vive, the Rift is tethered to a separate PC and cannot function on it's own.  

...the Oculus Rift does exactly what first-generation products need to do: it provides a premium, un-compromised experience that’s going to blow people’s minds when they try it.
— Gizmag

Samsung

Samsung Gear VR is a mobile virtual reality headset developed by Samsung Electronics in collaboration with Oculus VR. As the user would probably assume, the Gear VR uses a Samsung Mobile Phone as the primary source of the experience. Unlike the Rift and the HTC Vive, this headset is considered “untethered," and does not require any aditional computer power to maintain the experience.  

The Gear VR’s relatively low price belies a compelling VR experience, and the games are quickly catching up to the hype. The headset is fairly light, and offers a completely cordless experience.
— CNet

Google

Cardboard is a virtual reality (VR) platform developed by Google to be used with mobile devices. The Cardboard's essential purpose is a low-cost way to inspire the user to see the true potential that VR possesses. If you have an interest in VR and want to experience it for yourself, the Cardboard is a great starting point. That being said, don't confuse "low-cost" with "simple." The Cardboard possesses all the essential elements that exceptional VR hardware should possess!

Not only is Google’s Cardboard virtual reality experience more enjoyable than I imagined, but also Cardboard is much more than just a DIY toy.
— Engadget