Let's Get to the Bottom!

[RG_]

In another thread BV spurred an idea for a new thread.

For both Tops and bottoms, what condition do you prefer that the bottom of the bottom come to when spanking? No color, barely pink, reddened, really reddened, shiny red, light bruising, heavy bruising, raised welts (as with a cane or switch), broken skin?

Secondary question: over what portion of the bottom, or elsewhere, do you prefer this visible indication to appear (and, one would assume, the sting to be felt)? How far up, how far down, including how far down the legs, if that is your preference, how far to the side and around the hips?

Please don't limit yourself to my descriptions. I'm just trying to give a feel for the question to get the discussion going. Use whatever words and descriptions are meaningful for you.