The Cooler Master EVO is a great little cooler if you aren't overclocking. That $30 cooler will take you along way, even a slight overclock and stay below 75c.
FYI, Any 2011 cooler works on 2011v3. Same socket holes mounts and size. Some companies haven't updated their descriptions or they are simply trying to sell you a "newer version" when in fact it is the same.