I have the MRW10U, and it's been rock solid since getting it up and running. Took a bit of fiddling, because I was transitioning 60 ZigBee devices and like 10 z-wave ones from my old USB dongle to the new poe one. So I had to get them running in parallel to do the transition and not lose functionality. But it's been great since. Plenty of firmware updates from the manufacturer too