I found the DOF on the 85 f/1.2 to be hard to work with in an active people moving around setting. If one person in the shot moves a bit forward the shot can be ruined, or with two people flanking a central subject and at a slight angle. I guess I can give it all a try. I do know what you mean about APS-C bodies. Something fun about them and an EF series lens. I personally enjoy my 100 f/2.8 Macro on that camera more then the 5d3.
I totally understand what you mean. I had the 85 1.2 ii for about a week. I like it...sorta. When people were sitting still and i got the focus right it was very good. But for weddings, portraits or any other seemingly high paced picture environment it was just a really frustrating endeavor.
Yeah the 100 2.8 has actually become one of my favorites to play around with. I can use it to take a great sharp picture and then very easily be operating the camera in video mode and it looks like i have a stabilizer. The IS works so well.
I do love the 50mm range as well. I am eager about looking for an upgrade to any of the 50mm line. Not that the current ones are good i just havent purchased one yet(other than the 501.8ii and my wife dropped it. Great manual focus lens now) and so i might as well wait to purchase one of the upgraded ones. Especially if it has IS. It does wonders for video. And it just as fun to toy around with when there is no tripod available.