How does EBC compare to other lens coatings?

There is so little information available on lens coatings. It would

sure be useful to have some idea of how EBC compares to other top-of-

the-line coating processes.

6 of one, half dozen of another. Pretty much all multi-coating processes are equivalent, and with the exception of complex zoom lenses and ultra wide-angles with many very curved elements, there is little difference between multi-coated and single coated lenses either. There is an awful lot of hype around something that doesn't matter all that much in most situations.

There are really only 3 important factors in lens coating materials: the durability of the material, its adhesion to glass (or the coating layer under it), and its refractive index. The AR properties of the coating are primarily a function of the thickness of the layer: a layer of AR coating material will block reflections of light with a wavelength of 4 times the coating thickness. Multi-coatings are laid down in different thicknesses to block multiple wavelengths; single coatings are generally targeted at the center of the visible spectrum (green), resulting in a purplish appearance to the lens because it reflects less light in the green range of the spectrum than in other colors.

Don't you have anything more important to worry about?