Totem Cams, not the Totem Alien versions, are arguably the best medium-size cams made. And the most expensive at about $80 a pop or $72 each for five or more. They are gaining a substantial following---see which has links to other reviews, , , .

Rock and Snow had them for a while but stopped carrying them because Totem wouldn't sell at a reasonable wholesale price. You can order direct from Totem; that's how I got mine. .