OK, Matricom Q2 mini-review, executive summary: This thing is a pain in my ass.
It's responsive enough and it is capable of decoding 30fps 4k content, but I can't stand it for what might be the dumbest reason of all time: I can't figure out for the life of me where the cursor is. The launcher is designed to be navigated by remote and I've also tried a bluetooth keyboard, but the change in contrast between an item with focus and anything else on-screen is so subtle that I can't figure out how to interact with the stupid thing except inside of Kodi. For some reason, my keyboard/trackpad combo would only detect the keyboard part. It's almost impossible to navigate standard Android apps.
It also won't deliver 4k Netflix and I can't get it to pass through native formats of higher-than-DD5.1 or DTS, even in SPMC. 4k Youtube played fine (though the app is impossible to navigate, I was able to cast to it), as did some 4k camera footage I have.
It DOES have both Google and Amazon frameworks installed. You can sign in to both, but neither are part of the setup process and, again, navigating those apps is nightmarish with the controller. Once I spent a half hour getting logged in (I kept accidentally navigating back or getting stuck because, again, I couldn't figure out where my cursor was), I WAS able to deploy pretty much anything I wanted from both app stores on to the device, but with the combination of controls I have at my disposal just now, there's no long tap or drag analogues, so some UIs are just off the table.
I was hoping for a more generally useful Android box that can run some of the stuff that Amazon's box keeps me from using, but there's still no decent PC/STB UI for media services outside Kodi and that's just sad.