Having FF with 35L, 50 1.5 and 135L, I'm thinking in:
1) selling the 50mm 1.4 and buy the 50L
2) buying the Sigma 85 1.4
3) buying 85L (more difficult due to the money involved)
Anyone had a similar debate?
Well, the 50mm f/1.2L will provide superior results to the 1.4, is built far better, and has bokeh to die for @ 1.2. It does require some skill to shoot with as it has some limitations at close range, but once you learn the lens the results are outstanding.
But, you don't have an 85 at all. I am thinking you are better off getting a 85L, and maybe down the road upgrade to the 50L. Because, you'd probably benefit from the 85mm coverage for portraits if you don't have one, and the 85L is a killer lens.
Only thing is, there are no specials right now so you are going to pay a lot more than when rebate season is around in the fall.