Additional Hash Sets to use with NSRL

I'm currently using NSRL RDS Modern PC (Minimal) to cut down on junk files when pushing images through AXIOM and EnCase. I've come across Hashsets.com which charges a small fee but says that their HashSets complement the NSRL very nicely.

I'm not familiar with them so I wanted to inquire if any of you are currently using their Hash Sets and have you found it to be worthwile to cut down on more junk/system files that NSRL missed?

Side Question …

axiom computerforensics down fee files hash images rds