I'm trying to switch to this and have seen that most of you link the data files but what other files/directories should I be linking?

I'm trying to set up 3 installs, one for if I play non boxed because I can max out the settings though I never really play that way anymore. In this install I have already linked the "account\xxxxx\savedvariables" directories to my account directory with my bank mule because it does the auctioneer scans. That way I can see the results across all account directories. My second install will be my main and my third install will be my clones. So this leaves the Cache, Errors, Interface, Logs, WTF folder and any possible individual files in the main directory. Interface seems a no brainer that it should be linked and again I want to share the auctioneer information but not sure if I should link the entire WTF directory, the Account Directory, the XXXXX Directory or just go with the SavedVariables account again?

Ultimately I'm expecting differant video settings between the main and the clones as well as differant UI settings and I don't want to have to mess with them everytime I log on. Also keep in mind one of the clones is resto specced so it can't share everything with the other 3 such as macros.

Thanks in advance for any possible guidance.