Why the Node 2i and not the current (2021) version of the Node (N130), or the tenth anniversary Node X with an improved DAC and headphone amp? If you have a deal on a NOS Node to try out or to use just as a streamer, go for it. However, I’d be a little leery of buying a used Node. (I have several and I like them a lot, but they are built to a price point and have, I suspect, a limited life like many of today’s lower priced electronics).