Texture Filtering blurs out detailed textures.  in my opinion, Many a render goes bad when some textures look blurry like my eyes are going bad.  Turning OFF Texture FIltering is almost always better to my eye than leaving it on, because it looks sharper which also looks better.  On some lo-res textures it actually looks beter, but on most, IMO, it looks pretty bad.

There is a python script available to turn it off here.  Just search the freebies for 'Turnfilteringoff' or a variant of that.

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!