I only have 4266's in my inventory (and just 6 of them), but I've used 4066 and 6066 plenty over the years. I haven't used the 4466, but the mounting is the same at the 6066. And while I prefer omni headsets, obviously they don't fit any differently than a cardioid, so you can easily translate my comments to your use case.
I love the 4266 because it's lightweight and very comfortable. It's also very easy to covert between single and double ear, if that's something you ever need to do. It's not the easiest to get on quickly, or for those who aren't used to how they work, which I think is its only negative.
The 4066 is fine. It goes on quick, and feel OK. I think the 4466/6066 is better though. The ear loops feel more comfortable (to me), and folds up into its case easier. I don't know that I can comment on durability, since they've all held up well for me, but I think the 4466/6066 probably has a slight edge in that regard. If I were in your position, and choosing between the models you mentioned, I would go with the 4488. Especially if the speed of swapping between users is a high priority. Just my opinion.