I had never heard of pentile screens until I got the Bionic and started reading about it.
In the end, while the screen was the best I'd ever seen in bright light (amazing actually) it was overall a mediocre screen. And really lacked the wow factor that is so important to me in the screen of a phone. The very first thing you see and the thing you see the most when using your device. Wow factor is cool, and the Bionic lacked that. But if that were the Bionic's only flaw I could have dealt with it.
The proverbial "straw" was the camera. I mean it is horrendous, still surprised Moto let it out like that.
The Bionic has awesome specs, the build quality seemed top notch to me, and overall a nice device. But the screen was just blah. And I then started associating Pentile with Blah. Apparently and hopefully, there is more to it than that. Considering the Nexus is 720 hd, and sAMOLED, and is still pentile, and from all reports has an amazing screen, pentile doesnt have to necessarily equal "blah".
Standing by. Upgrade in hand, again, because I returned the Bionic.