If anyone is looking for a miracast device for the droid maxx this one works pretty good. I bought it from best buy on special $29.99 down from $79.99 (50 off). I wasn't sure if I should get because of the reviews but tried it anyways figuring I could return the item if it didn't work. So far so good. Does what it says it does. I tried videos, pictures even games. I also tried sling player and it streams to the tv with sound. I used to use a mhl adapter but the droid maxx doesn't support it so had to use the wireless display. Pretty easy to setup only took a few minutes. I did end up updating the firmware which is very easy and didn't take long at all. Here is the link:
Rocketfish Miracast Video Receiver RF-WFD301 - Best Buy
Rocketfish Miracast Video Receiver RF-WFD301 - Best Buy