I agree with all of this: MDPI were fast and professional. My only quarrel with them is the issue of AI authorship, which unfortunately was central to our paper (the whole point of the project is to find out how much of the work the AIs can do). But it's not MDPI's fault, right now it appears that no academic journal accepts AI authors. I am sure it would be risky for them to decide they were going to be the first exception to that rule. It's a hot-button issue, you can't even discuss it. We made the mistake of trying to do that at one point and were dismayed by the results. But, as noted, other journals would quite likely have been just the same.
If AI authorship isn't something you care about, I'd certainly be happy to recommend them.
If AI authorship isn't something you care about, I'd certainly be happy to recommend them.