of those i'd probably pick The Towers of Avarice. it's got some really great industrial sounding riffs and an epic/futuristic sound to it that i've never heard from another band (maybe Meshuggah). you forgot one amazing band though... Martyr. their album's Hopeless Hopes and Warp Zone are classics in technical metal, in my opinion. and what about Dream Theater? i know they are more mainstream nowadays but you can't deny albums like Images and Words or Scenes From A Memory.