Okay, so I've been using these ZenRich screen protectors on my Surface Pro 9 for about two weeks now and here's the real tea ☕
The installation was surprisingly easy! Like, I usually mess these things up but the 'one-push' thing actually worked. Just make sure you clean the screen properly first (learned that the hard way with my last protector).
The blue light filtering is no joke - my eyes don't feel as strained after long work sessions. Though fair warning, colors look slightly warmer which took some getting used to.
Touch sensitivity is great... except when my hands are cold? Weird specific issue but it's happened a few times now. Maybe it's just me?
Pen compatibility is perfect though - no issues with my Surface Pen at all. And no bubbles! (Unlike some other reviewers apparently - guess I got lucky?)
Only complaint? It does attract dust like crazy around the edges. But for the price and getting two in a pack? Definitely worth it imo.