Hundo Collection Question

I currently have a hundo Entei and Suicune, both from purification, but that’s for another post.

I have several okay to good-ish Shadow Raikou, and one that I can purify to be a hundo (14/15/14). My question is, would you purify to have the trio of hundo’s? Or keep the high IV shadow Raikou?

I know what I’m doing, I just wanted to see a general opinion!