In reply to jmills94: There was a very similar recent discussion about micro-cams on
http://www.ukhillwalking.com/forums/t.php?t=585372 that might be useful to you.
Along with victim, I'm a big fan of Zeros.
I've been climbing with WC Zeros for 12 years now and they are still my micro cam of choice. They are a great bit of gear, have the same colour coding as other WC and DMM gear and have the really useful extendable sling. I also paid considerably less for them than the other options.
For a while you could get WC Zeros sizes 4,5 & 6 for £100 which was a big argument in their favour. However, currently they same to be around the same price as the Mastercam.
In their favour is the extendable sling, great flexibility, lighter weight and better resistance to corrosion. In the minus column, the head width is wider, some find their action less slick and some questions have been raised over their durability when aiding or with heavy use.