K 135mm lens

[Ian bromehead]

There is quite a choice of this focal length, between Takumar 2.5 through
FA. Examples of the 1st in this list are appearing as cheaper alternatives
on ebay, but I'm sure the pugistes have their own views on this particular
135mm vs the others.
Anyone have a guide or decent URL to help choose ?
I'm not too interested in macro since I've recent;y purchased ext tubes,
reversing rings and the like.
Thanks
Ian