Best shader packs for older computers?

Depending on your computer specs (maybe you can share them with us so we know how to better help you), you might want to look into some of the most efficient shaders according to hp:
1.Sonic Ether's Unbelievable Shaders Mod
2.Sildur's Shaders Mod.
3.Lagless Shaders Mod
4.KUDA Shaders Mod
5.CrankerMan's TME Shaders Mod