Since you're using a crop sensor, I would recommend getting the 50 1.4, as the FOV is almost equivalent to 85mm. And with 85 1.8, you'll be @ 135mm. Also, you have to take into consideration that the bokeh on crop sensor is not as impressive as FF. So between 1.4 vs 1.8 on a crop sensor, I will go for the extra stop which is 1.4. -- but that's my preference.I totally agree with this.
Having an FF body, i always prefer the 85 for portraits - both indoor & outdoor. For general use and versatility, I'd pick up my 50mm.
85mm seems to be the go to for portrait. On a crop, a 85mm is no longer 85mm. A 50mm on a crop is more in like with what a 85mm would be on a full frame as mentioned.