Share your experience!
I had similar experiences before so I bought some from Amazon
Either KlearCut or invisible shield by Zagg fit great, more so KlearCut but I don't have the Xperia X, just my experience with other Xperias
http://www.xperiaxcases.com/klear-cut-6-pack-screen-protector-for-sony-xperia-x/
I can't find it on amazon but they are quite cheap
@uliwooly Problem is that because of the curved glass, it is difficult to apply it correctly on the edges. I have noticed the same.