Help pick a portrait lens for the holiday

Thanks FTH for your input. Wondering if you have additional thoughts on Nikkor 85mm/1.8 vs Tamron 90/2.8? TOF recommended Tamron 90/2.8 which echoes Miller at

http://www.amazon.com/review/R1ACFNNDABL4M5/ref=cm_cr_pr_viewpnt#R1ACFNNDABL4M5

Similar lenses that are attractive include these several, so really a hard decision.

$549  Nikon 60mm f/2.8G ED AF-S Micro-Nikkor Lens for Nikon DSLR Cameras

$424  Tamron AF 60mm f/2.0 SP DI II LD IF 1:1 Macro Lens for Nikon Digital SLR Cameras

$449 Tamron AF 90mm f/2.8 Di SP AF/MF 1:1 Macro Lens for Nikon Digital SLR Cameras

$489 Tokina AF 100mm f/2.8 AT-X M100 Pro D Macro Lens - Nikon Mount