The DC handgun case will be argued today. As you've probably guessed, I'm rooting for the Second Amendment purists. I don't have much to add to that, though if you're interested, you can take a look at this old post on the effectiveness of gun control, which aside from citing the execrable John Lott (I didn't know!) remains pretty good. After that, I recommend heading over to Volokh or Scotusblog and following it there.