LOD bias should I increase or decrease ??

I am making simple 2D game with Orthographic camera no such detailed view is needed because all objects are at distance of 10 from camera.

And now i am making optimizations and playing around with Quality stting

But i Do not understand that what setting i should choose for LOD bias

http://docs.unity3d.com/Manual/LevelOfDetail.html

in manual it states that LOD 0 means greater detail BUT in Quality setting for 'fastest' it is 0.3 and for 'Fantastic' it is 2 which is kind of opposite :P

So I just need to should i incerease it or decrease it for better performance