I recently purchased a used Quantaray 135mm f2.8 lens, and am VERY pleased with it. Heavy duty, decent glass, nice bokeh, and extremely inexpensive. So if anyone out there is looking for a cheap but decent 135mm, there you have it. Used typically goes for under $50.
I will, but probably not for about a month or so. I currently have a DIY adapter, which for a DIY is pretty decent, but I don't feel it would do the above post justice. I'll be getting a LEX pretty soon though and plan to generally go test-footage-ape-$H!T-nuts for a little while, and that'll include using this lens.