I picked up an old stock 105mm last year, case included. I love how it makes people look, it's a great bridge between vintage and modern lenses.
How do you feel abbout the DC function? I've found R settings don't really focus correctly with AF, so it's best to focus manually. Is that the case with the 135mm version too?
DC stands for “defocus control", as distorting the bokeh forward of backward.