W! 9KK into 2P+H, 1K: IMO the best one
W! 66PK into max powerblow
W! 3KK into 4P+K max charge
Very good if the opponent doesn't know about it, if he knows then it's less usable.
These techs are good, imo all the rest are interesting find but not really worth going for (except maybe Stun 8P WSK, 6K, 8P force tech if you'are feeling your mix-up). Ein is already too much unsafe that way so I don't feel like using the other techs.