I was really hoping for an internet slap fight about this. I used to moderate a cycling forum and there was a huge unfriendly debate about the relative merits of each. There were deletions, warnings, people pretending to be a different person to back up their original claims, and bannings. It's funny now, but at the time it was simply annoying.

To answer your question, there isn't much difference in the approach to how both models work, are installed, or function. Do you have a more specific question?