are you a beginner snowboarder? if so, i'm going to say none of it matters. they make too many boards covering the entire spectrum of flex/profile that you're going to drive yourself NUTS trying to decide which board is the right one for you. i would suggest a medium-flex rockered board for ease of learning.
and i guess your second statement is somewhat true. there are compromises made when going rocker or camber, stiff or noodle. if you're a beginner, again, a medium-flex rocker board will be a great start.
I am not a beginner, I woul say "advanced beginner"
. I had a Burton Twin '07 161 (6.1'' , 180lbs), that was either too big or too stiff! Absolutely something much more playful and flexible and ofcourse sorter! But I do not know how to choose between all these boards! (Burton Hero is one choice do not you think?)