Well I have the money for the Sigma 70-200 f/2.8 and was just reading some finnal reviews when I ran across this http://www.bhphotovideo.com/c/produ...90306_50_150mm_f_2_8_EX_DC.html#goto_itemInfo Now my question is do you think this would make a better portrait lens than the 70-200. Or will the 70-200 do just as well? It would seem like the 50-150 would fit portrait work a little better but then you are loosing that extra 50mm on the far end? Will the 70-200 be good for portraits or will it be to big and ackward? Any thoughts?