Best place to ground engine to battery

Hey slant brothers. I bought some new battery cables and wonder where is best place to ground the battery. Currently it goes to one of the bolts for the water pump. But that makes the cable path sorta bend around to avoid the Fan.

I am curious where you guys attach that ground from the battery?
p.s. the cable I bought has a 2nd lead that I ground to the front of the car to the piece that the radiator attaches to.