In article <5a4k62$r6p@nntp.Stanford.EDU>, philduke@leland.stanford.edu says...

>I am contemplating buying a portrait lens to supplement my 50 and 135mm
>lenses. Which one should I get? 85mm f:1.8? 85mm f:2.0? 105mm f:2.5? What
>are the respective reputation of these Nikkor lenses? any other
>suggestions? (e.g. is the 105 too close to 135 which I find too long for
>portraits?). I am talking about manual focusing lenses, for an F body.

Virtually all of the tele Nikkor primes are first-rate, so there is
little need to consider optical differences - choose on FL/speed/price
(the 85 fits between your 50 and 135 lenses...).
Hope This Helps