depends on a) what type of bud you've got and b) how many heads on the shit.

if you've got some fire, joints are great because you can taste the buds. it would be a damn shame to cover up that awesome taste with tobacco paper... but jernts also burn quicker. so more heads=> more of a reason to roll a blunt.
my .02.

edit: when youve got sticky icky, nothing beats smoking out of glass.