I currently have the majority of my VPS's over at Linode. I do have one (not MIAB) Amazon Lightsail VPS I originally setup for testing. I have to say, alot of people poopoo'ed Amazon, but they are reliable and fast for the starter price of $10. That said, I am really a RHEL guy, so even though Amazon Linux is a RHEL 6 fork, I really have become accustomed to systemd, and thats why I didn't move anything else over yet, nor create any new VPSs there. Linode supports custom images (can easily upload them) so for stuff that needs RHEL or Oracle, its easily taken care of that way. For all else I have CentOS.
But I can wholeheartedly recommend both, given the lack of systemd on Amazon's Linux. Amazon does also offer Ubuntu 16.04, which I do believe does systemd (not a Ubuntu fan, nor following their current status).