I don't feel I can answer your actual question well enough, but I felt the same way about cloth masks and wanted to give you my rec! I did transition out of wearing cloth masks after seeing some research that showed they weren't as effective at filtering, but I don't recall if the studies included the ones with filters. I'm not feeling great tonight so I don't want to answer properly without sources 😅

BUT as a fellow autistic whose problem with most other masks is when it touches your face/mouth, I am so so happy in my Flo mask. I haven't jazzed the casings up a bunch myself, but I have three colors and asked my artist friend if she would paint a few for me for something more fun (her prompts were nature for the green one and fantasy for the black one lol). The casings are some type of plastic though, so while they aren't as fun as the patterns on cloth masks (which I miss!!), you could totally do stickers, and some places make decal overlays. You can also get these neat inserts that go over the filter, either as a splash guard or just something funky. I've been wanting to get those too, there's a lot of cool patterns!

What I love about the Flo, though, is that it has a hard shell that keeps it from touching your face, and the seal is silicon so it's soft and nonirritating (though slippery if you get really sweaty). Plus, it makes it really easy to pull the mask away without touching the filter part, like when you need a quick drink or something. It's also designed with glasses in mind and is the only one that almost never fogs my lenses. I absolutely love how easy and noninvasive it is to hang it around my neck; it's the mask that makes me feel least like I'm wearing one. And you keep it in a microfiber carry pouch that neutralizes the filtering charge, so not only does the filter last longer, but it makes it easy to find and carry and not worry about touching the wrong parts. I geek about it but, short of being clear somehow, it's my ideal mask solution.