I will give you a list of my favorite dj's and there are a couple u just have to see live because they sound so insane on a big sound sytem that can really bang.
tiesto (of course)
armin van burren
deadmau5- see him live if u can he throws down
infected mushroom- see them live absolutely awesome show
benny banassi- wasn't impressed until i saw him live last sat this guy throws some bangers live!!
bassnectar- best live show i have seen if u like dubstep
dj dean
ferry corsten
jon bishop
ATB
BT
crystal method
paul van dyke
david gueta
pendulum- good DnB
Above & Beyond
MSTRKRFT
shiny toy guns
boys noize
crystal castles- if u are ever tripping listen to them they will make u shit
spoongle
dj Irene- throws some good DnB down
Dirty South- don't see live they were disappointing but they have some good remixs
Rabbit in the Moon
pm me if you want a specific type of music. As you said techno i feel you are new(ish) to the scene so your refferring to all electronic dance music when you say "techno".
Hope i have helped man