Hi guys,
I am looking to have a go at macro and need help getting a lens for my D700,
I going to buy the lens from DWI and these are the 2 I am considering.

Sigma 150mm f2 8 apo macro ex dg os hsm
or
Nikkor af-s vr micro 105mm f2.8g if-ed

The Sigma is only $165 more and I don't mind paying the extra cost.