Which are the best scaling shaders?

[darkskyx]

Hi. I'm new into this platform and I have a question...
What do you think is the best overall 2D, 3D and mixed (2D and 3D) scaling configuration for Android?
For PC I found those scaling shaders works for me, but I don't find a good configuration for Android.
The most problematic thing in Android I usually can't fix is that there is a game with bad text quality and 3D models. If I try to fix 3D models to be in HD, the text looks bad. If I try to fix the text, the 3D models looks bad. The only solution I found is to use the default conf. and use some FXAA or Sharpen effects, but I think it can be improved more.
Thank you!