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My sparkplugs were changed by the BMW mechanic during the 6oo dollar service + inspection (!) and I was there all the time and watched him do it. No antiseize, no torque wrench. I then a few weeks ago changed sparkplugs in my wife's toyota aygo and used torque limiting wrench to tighten the plugs to 23 NM and having got the feel for it I am sure that if you have the feeling, you don't really need the torque wrench. You will feel the washer squeeze tight and then just a little bit more and no more, stop.
By the way "Denso-toyota" explicitly mentions in their webb site "No anti seize". It is out of fashion. The spark plugs are so cheap that you replace it every time instead of re-aligning and re using them so why anti seize? It messes up the torque technique. Chances are you will over torque and crack the plug or the thread.
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