I don't know what's made for Hasselblad, but you can't go wrong with a tessar or triplet in regards to flare as there are fewer glass-air interfaces to cause reflection. Single coated is plenty for those lenses. A triplet isn't going to be as sharp, and a tessar probably won't be 2.8 and if it were, it wouldn't be crisp at the edges wide open, but stopped down it's great.