Well it's a personal preference but I'm looking at like 600-700 damage+. Like Tsubaki's Corner 5CC > 22D > OD stuff goes into 5k, but without OD, the combo deals 4.3k. 6B CH > OD is a pretty hard hitconfirm as you pointed out, and if you know you're going to get a CH from a strike you're better off going for 5C/6C/3C CH.
Bunch of OD combos you say?
Edit: Yeah it was by Kazu. You'll have to find the videos on nico now if they're still there.