I’ve been using Hetzner’s servers for years. Very satisfied with it. Their back end interface is also very well made. They are fairly cheap with good specs.
I find that their ARM servers are performing much better than x86 for running Discourse. Though I didn’t run extensive tests, from what I saw, with comparison between servers with the same specs and different architectures, I got faster page loadings and way faster rebuilds (up to twice as fast).
I don’t know why.
I’m only bothered by the fact that I must rely on a mail-receiver fork to get it working on ARM (which has caused no trouble so far).