Sounds good and makes sense!! It's just that when you're into a hobby that traditionally has you planning your next upgrade/purchase, it feels very out of character to feel "done" with your set up. It actually feels wrong! LOL!
You'll outgrow that feeling eventually. The sooner you get to that point, the more money you'll save. lol
The trick IMHO is to get something you're really happy with for yourself and then, instead of spending money upgrading, spend the money on going to meets like Canjam. There you can nerd out and hear all the cool stuff people are chatting about, make some friends, meet cool folks like Zach, then go back home to your comfortable gear. Flying out to a weekend in SoCal (or New York or whatever's close), getting a hotel for 2 nights, etc can be done for less than the price of a new headphone. With COVID restriction lifting, this is a real possibility again finally.
That said, I've been in love with the Auteur since I first heard it (and I've hear it many times). I've heard all of Zach's headphones, reviewed several of them formally, and the Auteur is my all time favorite ZMF. I'm not sure how he decides on the prices, but if he wants to sell my favorite headphone for less than others that I like less, I'm not going to complain. My point here is that just because the other headphones are more expensive, doesn't mean you're going to like them more. Might want to see if you can get ears on the other cans before deciding.