In case you missed it in all the news about the Cataclysm beta, Ruby Sanctum was released into the wild on Tuesday. With a new instance out everyone is asking, "What's in it for me?" But my question is, "What's in it for enhancement?"
The short answer is ArP. For a stat that's going away in a few months, we're seeing a lot of it in Ruby Sanctum gear from both the 10- and 25-man versions of the raid. Armor penetration (ArP) is not the ideal stat for enhancement. Not ideal, but definitely usable. There are some definite winners among the RS loot -- on both 10 and 25.
I've created a new enhance gear spreadsheet on Google Docs including the new loot. It's read-only, so either make a copy to your Google Docs file or save a copy to your desktop as an Excel file. I've also included some sample EP values for different levels of play, including EP values derived from the latest Elitist Jerks BiS gear, setup and rotation.