I came into the ID.4 from a Kona, and I don't see these as in the same vehicle class at all. And I sort of see the eNiro like I saw the Kona, so to me it was a strange comparison.
I inititally ordered the ID4 but after driving one decided on a Niro instead. I think they are pretty comparable. The Kona is a much smaller feeling vehicle than the Niro.
I liked the ID4, but the touch controls and little dumb things like missing two buttons for the power windows drove me nuts along with the overall feeling of unfinished/buggy software. Also it felt a bit too sluggish for me. Tons of room though, and a tow hook which is not possible on the Niro.
The Niro feels a lot quicker and more nimble and has enough interior space for me. I also like all the buttons, the quite decent stereo, and I have yet to find any software glitches. It's not a fancy car in any way but well put together and feels like it just plain works
. And it's efficient as heck; I drove a 200km round trip yesterday and averaged 11.8 kWh / 100km.