Wanted to mention, although I voted neither, it's not necessarily that I think they're horrible (although I'm really not a fan of those pronged ones) because I have a greyhound, I can't use either on them. I use a martingale (or Humane Choke Collar as they're sometimes called), and find they work wonderfully. Much softer and more comfortable for the animal, and if you're looking for something more for everyday, most collar makers will custom make them to fit other breeds.

Plus you get great variety - this is Elvis' football collar.


And this was his Graduation collar (had to look good in the pictures, after all!)