I tried only one from Moodie full cover curved (German brand). Probably rebranded Dooqi, cause same as yours it's full covered but rainbow spots. And the screen seems dull, oleophobic is non existent. So I'm looking for the best one and on Sonymobile forum, someone recommended Japanese brands Deff and Rasta Banana. Found one review about Deff on Amazon.jp. But only one star. Well, kinda a relieve cause ordering international seems complicated. Rasta Banana review is on a Chinese site. But it seems more like product advertising.
On reddit xperia I stumbled on a Youtube review, presumably the best xz premium screen protector. The guy says he tried many screen protectors too.
There is a xz1 version too. But it uses custom adhesive. Not sure about it, but tutorial looks very easy and from the comments it's easy to remove too. It's from InvisShield.
I'll give it a shot or there is another full curved from Brando Workshop. But not sure if I won't get the rainbow spots again. I hate to get the same one lol.