I have an R&D/Visualization position at work, and we've been playing with VR for a few years. We have them all. I was in the developer preview program with microsoft and they sent us 3 WMR's last year. The WMR headsets (Odyssey IS the best one ) are no joke. Better than the VIVE and Rift in the sense that you are not required to set up tracking devices. This may seem like just a convenience thing, but it comes into play when setting up your space if you don't have the ability to mount trackers on walls, or have room for tripods. I find this to be a better solution for myself because if I want to put it away, I can just unplug it and put it in my drawer. One HMDI, and USB is all it needs. Setting up the Rift with 3 trackers, oh boy, you better have USB ports to spare. WMR's are comparable in other areas. If you are in a well lit room, tracking of the headset is easily on par. Resolution, and overall screen quality of the Odyssey is noticeably the best out of all available HMD's. The controllers can get a little funky when they are out of view of the headsets tracking cameras, but that has been getting better with every update from M$, and with developers adding official support. Make sure you have a bluetooth adapter for your controllers, because they don't come with one.
I could go on and on with vr stuff. We mostly create B2B training tools, product prototyping, or tradeshow "experience" VR apps at work, but I get a lot of time in headsets. PM me if you have any questions, or if something isn't working right for you and I will try and help.