I have used Sketch a lot and can recommend it quite highly. I'm not a big fan of in-browser tools so it's not a knock on Figma at all, I haven't used it beyond a very short demo.
edit: I've used sketch from a design and a front end devs perspective and it was nice to use from both.
edit: I've used sketch from a design and a front end devs perspective and it was nice to use from both.