I tried Screenward & scratchgard
Scratchgard makes screen grainy but screen feels smooth , i could not tolerate the grainy screen for long and removed it.
Fonokase - Screen looks like no screen guard is applied but it is a finger print magnet & screen feels sticky, dont buy this.
Screenward - This is best of the three, screen looks just like it did without the guard, no finger prints , easiest to apply but touch responsiveness isn't as smooth as with scratchgard , i am going to keep using this.