Amazon Fire TV

Hi everyone, so Amazon is selling its Fire TV here in Germany since yesterday.
I'm a Prime-Member, so i could buy it for 49€ (~64$).
Since this seems to be a very good offer, i would like to know if anyone have experience with this device.
What's about other Streaming-Services like Watchever, Netflix and so on? Or are you just able to watch Amazon Instant Video?
Because i'm not sure, if buying a device for only one Service is worth the money.