My goals in setting up secure nodes were to try and have the best price/performance as well as finding diverse locations on different networks.
I started out using Linode on their 1024 plan, but realized these would not pass the challenge consistently. I upgraded to the Linode 2048 plan which worked great, I was even able to customize the swap space in the linode control panel so I did not need to add the /swapfile as in blockops instructions.
I found another VPS provider called vpsfast.net which has VPS in many different countries, unfortunately they are expensive and not all locations have SSD. I am spending more than I want to for one of their VPS in Brazil because I do like to have a node in South America. Their customer service has been the most responsive of any provider I have used.
OVH is an excellent VPS host with good price/performance. I would have more VPS with them but I was confused by their website and mistakenly ordered something called “cloud container”. When they refused to credit or refund me I decided not to order more.
I have one VPS with AWS Lightsail, again it is more expensive than I would like but one of their locations is Mumbai and it is great to have that diversity. Their configuration is a little different so the standard blockops instructions needed to be modified a bit to make it work.
I would like to thank hairetikos for these great instructions for a minimal Debian build: https://steemit.com/zencash/@hairetikos/minimal-vultr-and-other-1gb-vps-optimal-zen-secure-node-guide
I have 2 VPS built from these instructions which are working fine.
Good luck to all the node operators out there, I hope this project is successful!