Awhile back, when playing with 914's, I learned a trick... anti-seize is a poor conductor, so is oil. However, we don't want our plugs becoming lodged in the head. So the trick was to use Milk of Magnesia. You can get a huge bottle of it at any drug store and it will last you forever. Something in it acts as an anti-seize agent and it has better electrical properties then anti-seize. I have used it for about 5 years on multiple cars with aluminum heads and have never had a problem. I even had "mint flavored"... that was all I could find. I take the bottle and pour it into the cap of the bottle, about half full, and then use a q-tip to wipe it on the threads of the plug. I would say I have done this for about a dozen plug changes on BMW's, Porsche's and Mercedes and it really does work. It is a lot cheaper then anti-seize, and a lot easier to clean up. It is also not that bad for the environment.
+1 on the Super Blue and then the Gold ATE... going back and forth makes it easy to see when you are done. DOT 5 is not good stuff for street or even ocassional DE cars. Yes, I have tried it and have gone back to the DOT4 for a few reasons... not the least of which is that it is much easier to source, cheaper and I really could never notice a difference. YMMV