I don't believe it has to do with AOIP specifically, but the quality of the design of the devices you have all bought, which will have been designed to extremely high standards, given they are intended for pro-audio users.
Something you will need to avoid is the "us versus them" mentality. If this thread is going to turn into what is effectively an "appreciation" thread (which we don't allow any longer) where balanced discussion is put down and people are attacked, it's going to end up closed, which would be unfortunate.
It is unfortunate to see a biased moderator.
I hope this will not lead to 'giving one side more leeway' than the other. Something I fear I already notice.
It is sad to see someone who doesn't seem to understand what I just said. It isn't about "sides".
Yes, I hope eventually I might be able to give one of these things a try, especially as the best results I've had with digital transports has been my iPad streaming high-res (that is audio over IP!). I reckon that, compared with expensive USB converters, one of which I own, the reason these AOIP devices give better results is that you're paying for the tech, and subsequent performance, rather than paying a regular audiophile component mark-up, where manufacturers must put a high price on things for people to take notice.