So maybe this is a silly topic with many variables but interested what people think. I realize some people only have crop, or FF, some have both, some have 1.3x crop (let's just group them into the FF crowd). Some factors:
85mm 1.8 is much cheaper than the 1.2 or Sigma version, so more people with Rebels/crop might own it.
On crop, 85mm has the same FOV as 135L does on FF. Personally I like using it this way.