Chrome cast doesn't work with Amazon Prime movies, though.
Chromecast does not work with a lot of things. Including hotel wifi. Its pretty much useless when traveling which is why I always carried the mhl cable. It just worked.
I have a miracast hub from HTC. Bought it, tried it stuck it in a drawer as useless. The drops and stutters caused by its need for local wifi which is NEVER fast enough for full bandwidth 1080p video in the real world made it a useless toy. I am not buying the Samsung one as its still tied to wifi.