I would say Maniac Cop 2, another outstanding Blue Underground release. I hardly ever skip one of their titles. This is probably the best from them since Zombi 2 or Maniac. Also really liked their release of Snuff even though the film isn't very good itself.
Another great release was Grindhouse's Corruption. Just fantastic in every detail from the transfer to the supporting materials. That would be my runner-up, followed by Twilight Time's release of Body Double which is one of my top five favorite films and arrived with a solid transfer, an isolated Pino Donnagio score and a nice little essay booklet.