"So Mad_Mat -- you are more likely to take the Jetboil to QP rather than the Peak or Feather 442?"

yes - mainly because its lighter and takes up less volume overall, as compared to a 442 and exra fuel bottles and cooing pot.  Solo, or for two people, it will be the Jetboil - more than two people, I'd take the 442 and use a bigger pot for boiling water, which is all I do anyway.

While the Jetboil is less mess and fuss (i.e. no refilling the stove from fuel bottles), that isn't really much of an issue for me - its mostly the weight and bulk