My goto services:

Digital Ocean
Special sauce: Incredible UI/UX, super fun to use. I’ve stopped thinking about it anymore, I just go to DO.
Downsides: Many (probably most?) of the IPs are blacklisted for email. Most aren’t great exits for VPN services either for the same reason.
CLI tool (doctl has pretty shit UX though)
$5/GB of RAM
Linode $5/GB of RAM
OVH
Special sauce: The lowest cost option, but it’s Canada and Europe only. No SE Asia, no USA.
$1.68/GB of RAM
Yep it’s 66% cheaper than everyone else.
Vultr
Special sauce: awesome plans with $2.50 for a node with IPv6 only, 512Mb RAM
$5/Gb
Amazon LightSail
Special Sauce: oh well, it’s the IBM of servers, so I might as well document it here: They have this clone of Digital Ocean, called LightSail, that s3cks, obvs. It’s the same price $5/Gb (same as Linode/DO/Vultr). Available in a few more locations than most of the above (incl. Mumbai; Digital Ocean has Bangalore).
$5/GB of RAM

Prices as of June 5, 2019. I may update this page someday, but then again I may not 🙂 Bookmark if you’re adventurous (ctrl + d, or cmd + d)