Is the Roon Nuceus device a good streamer?

A Roon Nucleus is an overpriced PC...  Have a look at Intel's NUCs...  Also be aware that even Roon suggests to use an Endpoint along with a Nucleus for the best Signal Quality...  In other words, don't connect a DAC directly to a PC/Nucleus...

Arafiq,
thanks for comment. On paper what u have looks good, sorry for your problems. 
I like the standalone nature of the Roon nucleus.  Desktop connection i use seems fine but don’t like the complexity of linking to a separate room and keeping it on all the time.

i see ssd storage in the future so that adds a lot more. Sucks it don’t come with at least a small amount of song storage.  Use of a Stand alone ext drive is less than ideal. 

The Aries isn't an alternative to a Nucleus. It is roon ready but you still need something else  to run the core. 

I have owned a Roon Nucleus Plus server and give it two thumbs up.  It's really well designed and made and the USB port is "dead quiet", really good sounding box.  It also has the Roon software installed and "automagically" updates itself.  I've never experienced a problem with my Roon server, I suspect you won't either.