My old 4G spent the last half of its life (6months) without a screen protector, and it worked out great. So I decided to roll w/o a screen protector for my 3D. About a week ago I noticed some very super fine, barely noticeable scratches. Like you have to hold it at an absolute perfect angle with the light to even notice it, and even then, I probably still could not pay someone to find the scratch. But since it's my phone and I am obsessed, I noticed.
This made me realize that this screen might not be as durable as the old EVO, so I immediately began to research some screen protectors. I went with the Steinheil Ultra Crystal screen protector, and man, this thing is great! Can't even tell that it is on there. When this wears out I cannot wait to try out some of the other high quality screen protectors you guys have recommend. For so long I have been used to cheap winky dink protectors that suck. But with this Steinheil protector, it is like touching the glass!