In personal experience, all of these have held true. Mise is just easier to use than asdf and I don't have to `asdf -h` every time I have to use it. The performance is significantly better and I can use mise exec in shebangs without sacrificing too much startup time. And it's easier to install because it's a SLSE. I wouldn't say it's worth deliberately switching from asdf (though I would, because asdf's CLI is an endless annoyance to me), but if you're on a new machine I don't think there is a reason to use asdf over mise.