Hori is really the best for screen protectors. I ordered their face cover too, and the PDP Pull 'n Go folio because apparently the Vita fits in that with face cover on. You might not care about the cover though. The Hori screen protector covers the whole front, but not the back.

I've heard that these are good http://www.amazon.com/gp/product/B006ROO1XA/ they cover both the front and the back touchpad. However, they're usually about $6 fulfilled by Amazon and right now they're like $19, so I suspect they all sold out to people who also bought the BF bundle.