>>1
Their writing style.
Everyone other than them, are boring and dull, either they put way to much detail into bullshit that is irrelevent, or they don't go into detail at all.
And when they don't do to little or too much, it still sucks because they don't do it properly, they're just not cut out for writing. Or well, not cut out for what I, and most others, like.
I know like 2 or 3 people who adore most books not by Weis/Hickman/Salvatore.