Burms are one of the most underrated snakes in the pet world. It seems that everyone looks at them as "oh, they're big fat and lazy and super gentle puppydog kitty cuddlewuzzums".
Burms really span the extremes of temperament pretty well.
That said, pretty much all small'uns I've ATTEMPTED to handle have turned out to be pretty pissy, and the majority of 10lb+ers have never even batted an eye at me and seemed quite content to be handled.