Soooo.. amongst the MANY screen protectors that spigen's been coming out, found these two and heaven help me, I CANNOT figure out what the difference is between the two. Anyone tried this before?? They both seem to have front and back protectors and the Dual has the Ultra Crystal version so what's the difference between that and the Ultra Crystal Mix? 
Dual Series:http://www.spigen.com/cell-phone/apple-iphone/iphone-5/iphone-5-screen-protector-steinheil-dual-series.html
Ultra Crystal Mix:http://www.spigen.com/cell-phone/apple-iphone/iphone-5/iphone-5-screen-and-body-protector-set-steinheil-ultra-crystal-mix.html
They have so many different kinds of screen protectors now.. it's getting kinda confusing.
Dual Series:http://www.spigen.com/cell-phone/apple-iphone/iphone-5/iphone-5-screen-protector-steinheil-dual-series.html

Ultra Crystal Mix:http://www.spigen.com/cell-phone/apple-iphone/iphone-5/iphone-5-screen-and-body-protector-set-steinheil-ultra-crystal-mix.html

They have so many different kinds of screen protectors now.. it's getting kinda confusing.