In reply to littleduck:
They are alright as a cam. But I find the Totems to be better than both the WC Zeros and Master cams.
WC Zeros negatives = Head is too wide, the springs on the stem are to vonerable (they get bent), you will end up extending the sling all the time because its too small doubled.
Master Cams Negatives = The range of the cam is tiny, Salty air jams them up(same with all Metolius cams), the sling is very very short.