Cider-V is very nice. It's VSCode so all the extensions just work - Vim mode, themes, etc.

It's also nice that it stores all my preferences in the cloud, so switching machines is seamless (helpful when my macbook broke a couple weeks ago and I had to use a loaner chromebook for a day).

It's also well integrated with google3 and codesearch, and seamlessly runs tests on remote machines with tmux integration and all.

Not all of google tooling is my favorite (like their source control), but the IDE is great.