Thanks everyone for the replies.
It looks like DNX is the best one to mine a the moment. Spent the week/weekend setting up the cards and have 90 online as of right now, the last 10 seem to be duds or non functional. lets see where this goes.
10 percent of non-working video cards is still normal. Check the fuses on these video cards, but just don't test them on good mining motherboards to avoid blowing them. Just first watch the video on YouTube on how to do it correctly. Perhaps you can repair a couple more video cards.