Yeah technique, strings sure helps BUT: 'djent' is mostly a matter of how you set up your gear in my opinion, if you don't believe me and you've got a PODxt lying around try this: record a meshuggah riff with your favourite preset - not that 'djenty' right? Download bulbs PODxt preset (can be found somewhere in this forum - don't remember which thread - do a search) record the same thing again: 120%kick ass 'djent'. And my playing is the worst humanly possible & sloppy like hell (I kick my own ass on a daily basis) so it's definately not technique on my part (I never really used that 'djent' guitar sound on my tracks cause it doesn't really work with melodeath, maybe just a matter of different taste. Sure sounds killer on most everything else though...)