I've seen in a couple of places that the M1 Mac Mini has issues when connected to Studio display, with performance levels dropping noticeably. I'm weighing up between a 16GB Mini and a Studio Max base model. There's a gulf in price terms, but I have an 8GB Mini with a 4K screen and I'm yet to run into any issues of that sort, but I want to make sure that when it comes to a new second machine, I'm making the right choice. I'm stuck with the Studio (or Ultrafine 5K) in order to maintain the pixel doubling, but if the Mini is going to suffer for it (I'll also be hooking a second 1440p screen to it), Studio it is.