Well the first time I heard Gojira,it blew me away.It was the first track from the new one(Ouroboros).The Way Of All Flesh is a pretty good album,IMO.Made me wanna listen to their older stuff and they're amazing,especially From Mars To Sirius.
Well IMO,Obituary are technical.The use of the instruments and the songwriting can be examples of them being technical.
By the way,I know that Behemoth made a direct cross-over to death metal in their Zos Kia Cultus album.They used to have influences of
black metal in their previous albums...