Which is better Kindle or Kindle touch?

I'm not going to be really scientific her, but a Kindle touch has only two buttons, one on the bottom to turn on/off, and one in the center of the bottom surrounding plastic. Meanwhile, regular Kindles have either 4 buttons, one on bottom to turn on/off, one in center of the bottom plastic, and 2 right beside that center button so you can scroll pages, etc. Other versions of the Kindle (and Nook) have keyboards that take up about 3 inches of the bottom plastic (this causes the screen to be smaller) that have numbers and letters on it. I recommend the Kindle touch because it is more convenient and is only about $30-40 more.