Re: PRS Dragon II Pickups...
try a set of the pearly gates humbucker on your prs. got them on a les paul classic. to say that the pearly gates smoke is an understatement. i played it through a marshall jtm60. totally nailed the sound zztop got in the antenna and rhythmeen albums. tight bass. very good aggressive yet sweet sound. lots of harmonics. lots of character. it really rocks when you play dropped tunings and like to palm mute. sustains forever.
the jb's are good too but lack bass and are too shrill for my taste.
59's are great and have, to my ears, a very good clean sound.
i'm not a big fan of the duncan distortion. they sound just like the gibson 500t pickup that my les paul came with. it still has a good aggressive sound but kinda lacks character.
can't comment on the jazz as i've never tried them. but i hear they're bright.
it also depends on the natural sound of your guitar. if you have a dark sounding guitar, you might want to try the jb/jazz or the jb/59.
but to my ears, the pearly gates are the best humbuckers ever. =)