Well, I just got done watching the videos and if I were going to do this it would be the first. The other three are kind of doing it half assed. You can see the that the backlighting is uneven, focused on the center, just like with the old CFL backlighting that came in it. It's just brighter. In the last one he complained that the LEDs weren't bright enough. Well, in the DS backlight that is using OLEDs which are much brighter. The lighting is even. And it's the right way to do it.
However, there is one issue. While installing a DS backlight panel will increase the battery life and give you better, more even, backlighting. It doesn't solve the larger issue. Which is the fact that you're still using an outdated LCD screen with horrible response time. So you end up with a well lit blurry mess. It's really like putting a band aid on a severed arm. That being said, if I were to do this, I would certainly do what he did in the first video.
