Just as a data point: we are planning to move to Crunchy and away from Heroku soon. We tested the two, and we have 4X improved performance on Crunchy Postgres vs Heroku Postgres.
4X. We were astounded. And so we’re the Heroku folks I talked to, who I’m guessing will want to try to bring performance boosts.
We haven’t done the switch quite yet because we’re waiting on Crunchy to bring out their Heroku Dataclips replacement, which is something we rely on a lot. But once it’s ready, we’re going to switch!