I listened to the back in the day. They were pretty alright, but now I consider them to be a running joke.
+1. I consider them a victim of the times passing them by. What they were doing in '94 was entertaining but nothing that Prong and KYUSS weren't already hinting at for years with the whole groove-before-shred mentality. They just wore prettier clothes and looked better on posters in the minds of teenagers at the time. That aside, they were totally enjoyable for most of their releases through Untouchables. After that I couldn't form a thorough opinion because I literally couldn't make it halfway through an album before realizing:
Head, Munky, and Silveria-same old song and dance
Fieldy-never gonna learn how to make even 40% of his notes actual pitches rather than slapping muted strings (I'm sorry but even for a band of Korn's simplicity this is apalling)
Jon-blew through his vocal chords by never learning proper technique (where the fuck is Melissa Cross when you need her?) then attempted to learn how to sing traditionally. One decade in and this is STILL a work in progress?
Nowadays, most metal bands are back to shredding and are comfortably heavier than Korn ever was so there is just very little about their music that is dynamically captivating any more. Fear Factory, although much better imo, kinda seems to have fallen into this same dilemma.