I have an Auralic Aries G1 and am quite happy with it's performance. I stream exclusively through WiFi and have never had an issue with it dropping out or sounding compromised by a poor connection. Auralic states that they dedicated a lot of focus on performance over WiFi matching direct ethernet wiring.
I sent a question into Auralic prior to purchasing the streamer and their head engineer replied directly back to me the same evening answering my question so it would seem that they are focused on good customer communication. At least in my one instance.
I also have a Bluesound Node 2i that I use on another system and while I think it is a great streamer for the cost I do like the Lightning DS application from Auralic over the Bluesound streaming app. With Roon that most likely is not a priority for you.
I have never compared Numin, Aurender or Innuous to the Auralic products so won't make any comments but I am sure they all make very good streamers in comparison. Price and features could be a deciding factor.