When choosing a US VPS, price is only the surface — routing, storage and virtualization are what actually shape the experience.

Routing: for mainland-China access, BGP-optimized routes (such as AS4837 or CN2) are usually more stable and lower-latency than plain international bandwidth; purely overseas workloads care more about international transit and peering.

Storage: all-NVMe SSD offers an order-of-magnitude advantage in random IOPS and latency over SATA SSD — databases, e-commerce and IO-intensive apps benefit the most.

Virtualization: KVM provides a dedicated kernel and hardware-level isolation, with more predictable performance (when resources aren't oversold) than shared-kernel containers/OpenVZ.

Billing: monthly billing plus instant provisioning keeps experimentation cheap, while one-click multi-OS reinstall lets you switch environments anytime. Weigh these together with datacenter region and add-on flexibility to land on the right US VPS.