Question time!

Today we bring you a question that has given us one of our followers. We hope that you respond to him.
"I am a happy owner of a Nikon D300 that I use in conjunction with a 18-200mmVR.Among the different types of photography I prefer the kind of "portrait".Assuming that I'm an amateur photographer and I shoot for sheer pleasure of it; which aim would you recommend for the genre portraits among the listed below? (I hope the letters are correct)?
1) AF-S 50mm f/1.4 G;2) AF 85mm f / 1,8 D;3) AF-S VR 105mm f / 2.8
Greetings to all from Paris
Hello 
Paul "