Man, taking a photo of a lighter colored lens on a white background is TOUGH!
No kidding...
10-22mm
24-70mm
70-200mm
FML
laraw, the question is: how important is f/5.6 @ 400mm to you. If you're ok shooting f/8, get the 70-200 f/2.8 and a 2x tele. If it's really important, get the 100-400, or a 70-200 f/2.8 II and a 2x tele.