Straight answers about ranking methodology, pricing and choosing the right plan.
On RAM per euro for a 1 Gbps-class port, CX23 usually wins among clouds we track. Contabo can look cheaper per GB of RAM if you accept 200 Mbps and a long term.
Both are Hetzner DE. Ping both from your users; the catalog country is Germany, not a single city.
A German DC helps with EU data location. It does not automatically make the company your processor under GDPR — read their DPA. Hetzner and Scaleway publish one; consumer hosts vary.
Primary IPv4 is typically an add-on; IPv6 is included. The CX price in our table is the VM cap, not always the checkout total with IPv4.