hmm not big into trance, more into drum n bass/IDM or downtempo

but i highly reccomend:
Boards of Canada
Amon Tobin
Autechre
Aphex Twin
Boom Bip
Squarepusher

and for trip-hop:
Massive Attack
Portishead
Thom Yorke's solo album
Team Sleep
Tricky
Morcheeba