Ask HN: Best Data Security / Privacy Vault Vendors?

[rsmets]

I am in the market for a PCI compliant Data Security vendor that can support things like tokenization or aliasing. Does anyone feel strongly about a particular vendor?

I know of a number of options out there that I that I will not name by name because I would rather get all of your input and not immediately steer the conversation in a particular way.

Thank you all