As @andy mentioned, we use Heroku and are happy with it. Lots of easy plug in support, no major complaints. While I don't have my own benchmarks, Heroku isn't renowned for its pricing as you scale. I wouldn't really worry about that right now, though. I don't feel like we are that vendor locked in if we ever had to move away.
Digital Ocean seems like another solid option for this.
As @andy mentioned, we use Heroku and are happy with it. Lots of easy plug in support, no major complaints. While I don't have my own benchmarks, Heroku isn't renowned for its pricing as you scale. I wouldn't really worry about that right now, though. I don't feel like we are that vendor locked in if we ever had to move away.
Digital Ocean seems like another solid option for this.
Amazon Lightsail may also be worth checking out.
Vultr and Linode also come to mind. And if you're in the Node world, Zeit Now is an interesting option.
But as I mentioned, we're on Heroku and like it.
ZEIT Now is not only for Node.js, you could also deploy static sites or docker containers (any app basically) :)
I really need to educate myself better on the ZEIT offering 🙃