If you always use padding, border and margin to a box, the IE-model may look better and more logical, but it's rarely the case.
Yes, the WC3 box model is a little bit more complicated, but it pays back in terms of possibilities and strict "to-the-pixel" control over your layout.
Once you make enough layouts with the box model you get accustomed to it quiet well, once you explore it's power and you'll never want to even consider the IE-bugs a better way of doing web layouts. Trust me, been there.
