For my 18 year eyewear experience, both of them has pros and cons. From the beginning my first eyewear is make of plastic and it is glossy finish. On that time I always clean it, wash it almost few times in 1 week to keep the lens clean. Because I don't want the lens is looks so blur when I want to see something small or far that very hard to focus on it. That is the reason.
After around 2 years, i change to metal frame which is matte finish. But for metal frame whatever dirty or clean it still looks the same, doesn't different much on that frame i was choose a light silver. I use this around 3 years if i not wrong.
Then after that, I do much of sport sweat a lot the metal frame are easy when get a ball smash on it. So no choice have to get plastic frame. The metal quite heavy a bit compare to plastic frame.
My lens are quite thick, i think is around 2 mm?? i'm not sure but feels heavy whatever which on metal or plastic frame. Because of heavy after 1 year i choose more lighter weight of frame to previous eyewear.
And that was a matte finish, before that is all glossy finish. This is the first time i choose matte finish. And the weight is so much lighter and i don't know what it make of and yes it is plastic but it so lighter. So i try it and get it once, guess what? I use this for sport and just few months the color of eyewear frame are drop off. It's like skin drop off, cheap quality actually and also the price are cheap also. When i go touch it try to remove, after few weeks the others are going off also. Then on that time i give up to choosing this kind of matte finish eyewear anymore.
After this, i choose a combination eyewear which is plastic and metal frame. It looks really good the weight is quite okay not that heavy very much but the price is not cheap at all. Because the design is quite complicate. I'm using it around 4 years.
And then change to glossy finish eyewear again, because my eye degree was increase so no choice have to change it.
Then this time, i choose back matte finish frame. Why i change? Because i seen a lot of people wearing quite larger frame size and it's looks great and comfortable looking. So, i think wanted to try and i choose matte finish. A lot of design now are using matte finish when user wear it looks mature. If glossy, maybe should look person face shape is suitable or not but mostly for now people are choosing matte finish.
I try the matte finish the frame are larger like the old school 18th century style. When i see on mirror, looks very great too so i try it again. But this time the frame is not cheap at all because it's a branded product so i think never mind let's try again and see how.
And now i used around 2 months the matte finish are still great not color drop off. (doesn't same like my first matte finish frame before) Feels great, doesn't feel the quality are of cheap material.
My conclusion, if you want to choose matte finish eyewear frame please choose the branded one not the cheap quality.
If you choose glossy finish eyewear frame please make sure the design is suitable for you. This is important, because the design can make people looks different for this eyewear.
