Best iPhone 4 Screen Protector?

I want a screen protector that will protect my screen, obviously. I do not want any silly stuff like privacy screen, anti-glare, etc. I have used: Http://www.amazon.com/...0044WTQVE/" class='ext_link'>http://www.amazon.com/...0044WTQVE/ but it scratches too easily. I want one that will look good and perform well for a long period of time. Preferably it should be under $10, but if its a really good value suggest it anyway. And please no rainbow orange-peels.
Also:
Have you used the screen protector and how long?
How well is it holding up so far?

Added (1). How easy is application of the protector?

Added (2). Http://www.amazon.com/gp/aw/d/B0044WTQVE/

I want one that is nearly invisible and feels and responds well like this one initially was

I bought one off of ebay (it was a mirrored one). I chose this because it was thicker, and thus more protective. Also extremely easy to put on. Just like a sticker. Just line up the edges and press down. It dimmed the screen a tad, but after a day, I didn't even notice. Not enough to be an issue. And it was nice always having a mirror handy. I've bought the cheap little film ones that peel off quickly, scratch quickly, and I can never manage to get them on without the bubbles underneath, no matter how careful I was. The mirrored one was firm, and layed flat. It stayed on my phone for 6 months+ til I stupidly decided to take it off. I think I got a 2 pack on ebay for like 3 dollars that included shipping. Also, there was no difference in how it responded to my touch. Reacted the same with or without the protector on it. I'm gonna be getting a new phone next week, and will be looking for the same screen protector for that model.

Honestly I think all the screen protectors works the same. I usually buy a bunch of cheap ones and when they get scratches, I simply change it.