According to Lighting Rumours, a new flash has come out to challenge that of the Yongnuo line. Triopo recently announced the TR-981N and TR-981C for Nikon and Canon. The units have i-TTL or E-TTL control, manual adjustment and built-in optical slave cells. Beyond that though, they also sport HSS: which is awesome when you want to get a monolight look or overpower the sun. But that still means that Yongnuo has the advantage with their built in radio system.