SharpShooter Loc: NorCal

LF, I don't see where you have ever said how you will use the lenses. Kinda hard to give advice without knowing that. I can tell you how I use them but it may not be remotely how you need them.
I have used all four of those lenses extensively. Not much difference between then. If you have a 35 1.4, I probably wouldn't consider either 50.
Both of the 1.2's might surprise you how big they are!
Unless you do a lot of artful portraits the 1.2's are no different than the 1.4.
A few have mentioned weather sealing, again, be careful if that's your criteria because in those two lenses the 50L is sealed but the 85L is not!
If you're happy with your zooms I'd stay with those Until you have a need for the actual speed, such as very shallow dof art shots.
You already have a 35 1.4 to handle low light or night shooting.
Maybe be more specific of what you might be shooting with them to get more pinpointed advice. Bottom line, if you are not sure, you likely don't need a 1.2 lens. When you need one, you won't have to ask!
Personally, I would stay with a Canon over a Sigma. I've not experienced a reliability issue with any of the 4 lenses you mentioned. Good luck with those lenses ;-)
SS

LFingar Loc: Claverack, NY

The 35mm f/1.4 is my go-to lens for indoor and low light shots, except for sporting venues. On my 7DII it gives me about the same perspective as a 50mm would on my 6D, which is one reason why I also took an interest in the 85mm.

LFingar Loc: Claverack, NY

No such thing as too many lenses! :-D

LFingar Loc: Claverack, NY

I've read reviews from several sources, including Canon. Thanks for the info.

LFingar Loc: Claverack, NY

I've already pretty much decided against the 1.2's. If I had a definite use for their capabilities I wouldn't be asking which I should buy. This is more about having a new toy or two to play with and to see what uses I can find for a good quality prime. I keep reading about how the "look" of a photo is different with a prime. The 35mm would seem to be a good place to start experimenting, but I would also like some longer options for some of the indoor sports I occasionally shoot. Lighting at some of these is bad enough that even my 7DII and 70-200 f/2.8 L II struggle. Or, maybe I just have the winter blahs and would like some toys to cheer me up! Mainly, I am looking for people's impressions of these lenses. What kind of uses they have for them and what, if any, problems exist with them. It's not about a specific need. It's more about trying something new and seeing what I can learn.

travisdeland Loc: deland, FL

I have the EF 85/1.8 lens-it is no doubt the sharpest and fastest lens I have. While I don't use it as much as I should(did use it today), there is no way I'll part with it. I picked mine up on Ebay for about $300. I think it'd one of those "you can never go wrong having it" lenses.

travisdeland Loc: deland, FL

I also shoot a 7D2 and a 70D-get the 85/1.8-you won't be disappointed.

SharpShooter Loc: NorCal

Travis, you say Uluru used the 85 today, but don't say for what?
Was it a special need or just since you have unit decided to use it?
I think LF wants to know why and how. Why not just another lens? Or a zoom? Just saying. ;-)
SS

asiafish Loc: Bakersfield, CA

Get the 85/1.8 and the new 50/1.8 STM, which is only about $100 and far better than it should be. The 85/1.8 is a gem.

Anandnra Loc: Tennessee

LF; We have pretty much the same equipment list if we change out your 6D for my 5D3. I recently picked up the 85 1.2 from Laura here on the hog and have since shot 1 wedding with it. I can tell you that it is not an easy lens to use ... and I am still learning and have a long way to go to get the best of it ... but boy, when you get it right on there's no looking back. While my hit ratio is getting better, the sharpness and the bokeh is very attractive. As good as the 70-200 is, the 85 blows it out when its right on. The 85 1.2 is much slower on the focus to bear in mind.

asiafish Loc: Bakersfield, CA

Manual focus Zeiss lenses are also gorgeous on Canon, if you can get bye without AF.

travisdeland Loc: deland, FL

Shooter-I used it today for shooting trains-it was a "prime lens day"-no zooms. No special need. I do this just to keep from shooting zooms all of the time-too easy to fall into that trap.

straight jpg from camera

(Download)

Tracy B. Loc: Indiana

I have both the 50mm f1.4 and the 85mm f1.4. Both are Sigma (non Art). They are wonderful. I do portraits with both, however I just took my 85mm with me on a hike to a Lake Michigan lighthouse. I got some great pictures.

RichardSM Loc: Back in Texas

HI LFingar

I have the Canon 50mm f1.4 non L and it a wonderful lens, I use it when I need it and I have not had any problems with it ever, as with all my L lenses I take care of them I keep them in a well padded case I only use Lowepro products for carrying my cameras and lenses.

LFingar Loc: Claverack, NY

I want to thank everyone for their replies to my question. Very informative! Since my 35mm, when used on my 7DII, gives me about the same perspective as the 50mm on my 6D, I've decided to go with either the 85mm f/1.8 or the 100mm f/2. Now I just have to decide which focal length I want and see what's available. Canon has a refurb 85mm for $305. Kinda hard to pass up.
Thanks again!