We were in the beta for this and they've been great.

We're presently in a migration for our larger instances on Heroku, but were able to test on a new product (fairly high writes/IOPs) and it's been nice to have more control vs. Heroku (specifically, ability to just buy more IOPs or storage).

Had one incident during the beta which we believed we caused on our own but within 5 minutes of pinging them they had thrown multiple engineers on it to debug and resolve quickly. For me, that's the main thing I care about with managed DB services as most tech is commoditization at this point.

Just wish the migration path from Heroku was a tad easier (Heroku blocks logical replication on all instances) but pushing through anyway because I want to use the metal offering.