Lens advice

I know, like so many others. But still, I always love to hear other peoples opinions. So here goes: you can see my current line-up in my sig. Recently sold my 70-300L because I figured I don't need the reach all that often to justify keeping it (although it's a great lens) and brought back the Sigma 35/1.4 to the shop due to having AF issues with two copies (although I would love to have a good copy).

So I now have about € 1.100 to spend on extra gear. I am not a nature photographer, so don't need a lot of reach. I do tend to take a lot of shots of my kids, and paid photowork usually involves portraits and some (minor) landscaping/travel stuff.

As of now, the lens I would love to have most is the Sigma 35/1.4 but since I had AF issues with two copies on both my 7D/5DIII I am a bit reluctant to try it again, although since the USB dock is available, I might risk it anyway.

Any other options you would recommend considering my current lineup and shooting style?

What is it that you cannot do now with your current "kit?"

I'd add a prime, 24/35/50/85L. Take your pick

gasrocks wrote in post #15985422
What is it that you cannot do now with your current "kit?"

Mainly low light photography without flash, and pics with a very narrow dof. That, and a nice wide lens like the 17-40L. Also, I maybe should be looking into some ND filters and a polarizer; since I don't havy any of these and nil experience with them either.