I only recently started learning rust, years after leaving vsc, so there's not much I can offer here. What I can comment on, in case you weren't already aware, is the fact that Zed is built almost entirely in rust and its developers have publicly said they're using it daily on the job.
Zed probably lacks some feature(s) you'd get with the vscode extension because even though it supports rust out of the box, there's lots of general functionality missing. That said, things will continue to improve, so I wouldn't be surprised if Zed eventually surpasses VS in rust development, simply because Zed has a lot more incentive to improve the development experience for it.
It's been pretty pleasant for me, though, I can tell you that much.