As much as I liked the other theme it had a few shortcomings, the main one being that every time I want to edit a post I had to go through the hassle of logging into the dashboard and then finding the post I wanted to edit. This theme allows me to do it straight from the post itself. A huge time saver.
It is also very configurable and has many other features like allowing me to sell ad space. That and the fact that it is pretty easy on the eye makes it a winner.