I'm still not sure what Figma's deal is, but it's a web tool so I'm good.
It performs better than Sketch by a long shot, and there is a client you can download to get fonts syncing. The fact that it's web based isn't an issue at all, but a huge benefit for sharing any sort of work or basic prototyping. I use it for everything I can. Hell, you can even do it on linux! ;)