I don’t think so, not at this time. They’re expensive, it’s a relatively new technology that’s not without its own problems; Jeff Atwood has an interesting blog post about the advantages and disadvantages of using them.
Given your intended use case the need for an SSD seems even smaller. You normally see huge benefits when booting and when opening up apps, but on a data server with a lot of RAM that rarely gets rebooted there’s no point in spending the extra money.