Equinix
Equinix boasts one of the biggest worldwide distributions, with over 220 data centers across 67 markets and 27 countries in 5 continents. This provider also offers 2,500+ network connections and an industry-leading uptime of over 99.9999%.
In terms of choice, Equinix has plenty. You can configure and support your deployments according to power needs in cage, suite, or server cabinet solutions, or even colocate in pods that act as dedicated rooms. There are other options for mitigating risks for financial services companies, and a range of virtualization opportunities.
Overall, the number of options could be potentially overwhelming, and as with many big service providers, small business customers may not feel they get the same personalized support that other SMB-focused colocation providers can offer.