I just ordered a Nexus 7 which will come later this week and want opinions on screen protectors. Should I get a screen protector or are they necessary for a Nexus 7? If I end up ordering a screen protector I'm obviously looking for one that does a good job protecting the screen but also I'd like one that is anti-glare since I will use this at times in bright environments. Also the ability to prevent fingerprints/smudges would be great also. Thanks for your advice.