You mentioned "best" and "low cost" which are usually contradictory criteria.

I assume that best includes modern, multicoated, copal shutter.

And, you said 135 mm.

So for that, I suggest the latest Caltar 135 which meets all the criteria. It is a Sironon lens, tack sharp, tiny, very light, and inexpensive. I sold one for ~$215 but I usually see them for ~$250.

The only downside of the 135's is modest coverage relative to 150's.