Logic puzzle: Russian Roulette

Here is another logic puzzle, see what you think:

You are tied to your chair and can't get up. Here's a gun. Here's the barrel of the gun, six chambers, all empty. Now watch me as I put two bullets in the gun. See how I put them in two adjacent chambers? I close the barrel and spin it. I put the gun to your head and pull the trigger. Click. You're still alive. Lucky you! I'm going to pull the trigger one more time. Which would you prefer, that I spin the barrel first, or that I just pull the trigger?