I just started with it, so still getting my feet wet, but it's been better than any other tool at really grokking my codebase and understanding my intent. The workflow feels better than a strict IDE integration, but it does get pricey really quickly, and you pretty much need at least the $100 Max subscription.

Luckily, it should be coming with the regular $20 Pro subscription in the near future, so it should be easier to demo and get a feel for it without having to jump in all the way.