Not happy with Heroku's recent announcement and looked at
https://hatchbox.io/ . If anything I'd prefer whatever is most similar to Heroku: automated deploys, some VMs to choose from, tight database integration (no worries about replication, backups etc). hatchbox's pricing seems too low (too good to be true?) There might be a market for those trying to leave Heroku by offering a great, comprehensive and straight forward migration guide.
https://render.com/docs/migrate-from-heroku