I’ve got this one.
It’s dirt cheap, you get two protectors and installation is not as difficult as it looks at first (just make sure you read the guide before you start peeling anything 
Performance is great. I use my iPad daily for surfing and drawing. Yet, the film looks close to perfect. No abrasions or dirt under the edges of the film. The adhesive hold well as well.
The only scratch it has is from my cat’s back claws because he jumped on my iPad once xD
But aside of that, I installed the film in June and it looks perfect.
They warn you that the film will be like very fine sandpaper to the tip of your apple pencil or stylus. So the tip will wear down quicker. So far that has not happened to me. But if you apply lotsa pressure to your pen, you might want to be aware of that.
Also, it will add some ‘noise’ to your screen. So your screen won’t look high def anymorre.
It feels like very smooth paper, btw. So it’s not like drawing on glass but it’s still smoother than copier paper, I’d say.
But for the price it performs great 