I bought this protector after damaging my Hori protector, I thought that for the price, it's worth the gamble to save £7.99, and it was!
Pros-
-Equivalent quality to the Hori protector
-6 in the pack (3 for each screen) means you have spares if you mess up
-Doesn't have the purple glow like the Hori protector (I liked it but a lot don't)
-VERY good price!
Cons-
-Not as easy to apply and harder to prevent dust under the protector during application
-The sound hole cut outs are + shaped, unlike the Hori, which are round, so the edges of these can get snagged and not stick correctly
-The edges don't seem to stick as well, leaving slight bubbles
To apply you have to be quite patient, and have a glasses cloth, as this doesn't come with one (I also recommend anti-static computer screen wipes to remove grease).
Top screen 1. Clean the screen very well with the cloth 2. Remove the sticker that says (1), the under side sticker 3. Line up the protector with the rubber blocks on the upper corners and the camera 4. Rub from the center outwards with the cloth, pushing quite hard with your fingers and the cloth 5. When all bubbles are gone, remove the (2) sticker, polish the protector to make sure all bubbles are gone and you are done!
The bottom screen application is basically the same, but line up the edges with 2 of the corners.