I'm in constant contact with Callum (the founder of Mediadevil), and also Rob - and we send Emails often to each other when a new product comes out, I'm always the first to ask them for availability etc
I have only tried 3rd Party Screen Protectors till they released their own, then I take off the 3rd party and stick the MD on. I only deal with MD and they are absolutely fantastic, you will also receive 5 flavored chews in the bag which is a nice little touch.
Biggest problem for me is getting to the Maomi chews before the rest of the family....
But seriously, have used their film and glass protectors for years and fit is always spot on. Not the cheapest but worth it.