There was a discussion at the beginning of the year about this (over here), don’t know if you missed it, might find more information for what you’re looking for.
Personally, i still use Scalingo (5 years for any stack, 2 years with Phoenix). Never had any issue (nothing worth mentioning anyway). There not worldwide (well, not like the others, there getting there, you can make a request for access to US based datacenters), so that depends on what you’re looking for i guess. Deployment, managed databases, there close to what Heroku provides, but without a lot of their limitations (they provide a free small database instance to go along a container for testing).
