The re-zero is pretty weak on the bass all-round and that was the main reason I got rid of it. Hell, I love the phonak 112 so don't think I'm a basshead or something.
People would associate the term analytical to something that has a forward midrange, more often than not in my experience. And in this case especially as the highs are very sweet and beautifully extended on the re-zero. I would call it an analytical IEM, but not something that is extremely analytical. The bass is too weak to call it balanced