96+ for me as well if you can still capture it. I don't really care how the 96 is made out of (even 13/15/15)
If 91+, an exception can be made if it has 15 attack and has some meaningful purpose in the game/special meaning to me. E.g. My Rhydon is 91 IV but I plan to max it out as it is my oldest pokemon now, and has 15 attack.