@Grey , I deployed Varonis while working at Nintendo and then later ended up joining Varonis and I have since worked with other technologies also.
Take a look at STEALTHbits and their StealthAUDIT and StealthINTERCEPT offerings - beats Varonis hands down on capability and price. Don't purchase before seeing a STEALTHbits demo. If nothing else, you can use STEALTHbits to knock Varonis' price down but from many prior experiences, STEALTHbits is the product of choice when compared side by side not to mention the overall customer experience difference between the two organizations.
I'll be happy to help answer any specific questions you may have if any.
Hans