Set isn't necessarily all bad either, especially on heavier bows. It makes them easier to string and smoother to draw. It does rob from your performance, but there is more to arrow speed than how many inches of set or reflex you have.
I personally prefer the look of bows that have a couple inches of set, and looks count for a lot in my opinion.
Excessive set is bad thing though, and more than a few inches is doing far more harm than good.