Since Dylan mentioned an interest in the F/1.8 non-L 85, I thought I'd offer my two cents worth. I'm using the 1.8 on my 5D3 and love it for my portrait/glamour/boudoir work. It is light and fast focusing. I like bokeh, but I don't often want the super-shallow DOF that you get at F1.2, so I find myself using the lens primarily between 2.0 and 2.8
The shot below was taken at: ISO 100, F/2.0, 1/3200. I picked it because it shows the minor flaws of this lens, which I don't normally notice.
As you can see, it is not super sharp at F2.0 but it does improve rapidly as you get to F2.8 or so.
If you look at the cropped image, you will see the chromatic abberration on the fence cables. You get green behind the subject and purple in front of the subject. You can remove this with Lightroom, but I've never had to do that. Note that there is no CR on the subject. In any case, the CR is gone at F2.8
I'm a big fan of this lens. If the price, weight and focus speed are important to you, I think it is much more attractive than the 1.2 L version. I'm pretty sure your clients will never notice the difference.