I used to be a HUGE fan of the AUG, even though I always thought it looks a little funky.
But, after several skirmishes it became plain uncomfortable. The comfort factor could be remedied by the alteration of the "trigger guard/hand guard" but there was always some weirdness going on.
I think by far, my favorite grip style is the m16/m4 style.
But, Ill admit it does look to me to be more aestetically pleasing than the standard style.
At 400 + its a lean mean bb slinging machine...not something to use in CQB though.