Upload & Sell: Off
The sigma 85 1.4 is also, IMHO, a very viable alternative, if you are considering selling the 85L.
AF is very fast, if you take into consideration the wide aperture.
IQ is outstanding.
I owned the 1.8 and planned on using it, among other things, to shoot sports.
For sports, used it twice: on a motocross type of race and on supermoto race.
On both occasions the AF was just not fast enough.
The purple fringing/chromatic aberrations/whatever-you-wanna-call-it was just too much. Maybe it was my copy, but it was really too much.
It wasn't also really sharp wide open, but, again, perhaps my copy was to blame.
So I sold it.
Bought a 85L. Don't use it for sports, of course, but I much prefer it in terms of IQ. I use it mainly for portraits and it truly excells.
I'm surprised no one posted samples comparing 85L and 1.8 pics taken of same subject in the same conditions using the same aperture to "prove" that people can't figure out which is which. Or a single picture and ask to guess which lens took the pic.
Well, IN REAL USE (not test pics) with MY copies, I found there was a noticeable difference.
Is it worth $1500? Perhaps not.
To some, yes. To others, no. Like everything else in life, it's all relative.
I decided to keep the L and have not regretted it once.
Others sold the L an kept the 1.8 and are pretty happy with their decision.
To each his own. Only you can know which is the best decision in your particular case.
I also own the sigma variant, but on Nikon mount.
IQ is truly outstanding and AF is very fast and accurate.
Of course, camera sensor and AF module are different, so they might play a role here, so if someone with the canon mount version could share their experience with it, it could help.
Unless the OP does not consider it an option, of course.