What is the best server host?

The best Minecraft hosting I've used is, Mcprohosting, even though they might be overpriced, they are an exceptionally very good service provider in terms of hosting and providing a fantastic interface panel to control your server, allowing you to sed moderators or administrations to your panel with custom permissions which I mostly vouched about. It's up to you really, but most hostings don't promise what they actually show, even if it's unlimited RAM or cheap prices for high RAM which has large difference compare to every average price for a hosting provider.

Anyway, good luck and I wish you good Minecraft hosting.

Also, if you have spare cash, you could go and support nuledbb in their Minecraft thing event for them to host a server which will help them a lot