Help pick a portrait lens for the holiday

Sunyguy wrote:

I currently have D600 with 24-85mm. Wanted to get a portrait lens for the holiday. Have been debating among the following lenses in the past two days but couldn’t make a decision. Sigma and Tamron lenses are on sale but Nikon lenses are within the same price range. Would appreciate your input if you have experiences with these lenses. I personally would like to go for Nikon 85mm f/1.8G, but not sure if I should start with Nikon 50mm f/1.8G (given the low price of 50mm). How about the other lenses? Thank you for your suggestions!

$449.00 ($50 off): Sigma 50mm f/1.4 EX DG HSM Lens

$424.00 ($100 off): Tamron AF 60mm f/2.0 SP DI II LD IF 1:1 Macro Lens

$439.00: Nikon AF-S 50mm f/1.4G SIC SW

$219.00: Nikon 50mm f/1.8G AF-S NIKKOR FX Lens

$499.00 Nikon 85mm f/1.8G AF-S NIKKOR Lens