Easy question. For general people photography (and versatility) 85mm 1.2 L. My favourte lens and probably reason number one for me to own Canon. I actually bought the 5d mark iii to go with this lens.
+ 1 for me too.
Yes, most of PROFESSIONAL wedding/ Portrait Photographers around the world use this Monster Lens 85 F/ 1.2 MK II. Yes, When I carry this Lens, Some of Photographers around me, come to ask and to see the Photos by this Awesome Lens. Yes It Monster Lens and So heavy that might be a part of slow Auto focus too----Hopefully next 2 years, Canon might give us MK III with Super Fast Auto-Focus and F = 1.0 and only $ 10,000 US. Dollars--Ha, Ha, Ha---Just Dreaming.
Here are my 85 mm F= 1.2 MK II Photos with my trustfully Old Canon 1DS MK I. ( some one might ask me why I use 12 years old ( 2002) 1DS Camera---Well, That Super fast AF ( one spot Focus) than my 3 Canon DSLR)