Originally Posted by
The Golden Boy
I like crossing my cables in front of and after the cable stop- meaning I run them upside down- also meaning I can't use one with an adjusting lever.
So it looks like the Shimano CS 50 are the ones I've preferred using.

You run them upside down? So you have the cable adjuster on top and the wires cross over the top tube?
For the OP: I don't think downtube stops matter much. Any you find are likely to be more similar than different and work well. I like the goofy little flip lever on the Dura Ace version.
Some of them are flat and some of them are curved on the inside to match steel downtubes.