OP if you are not into electronic music, I think now is an excellent time to get into some.
Infected Mushroom - Classical Mushroom, Converting Vegetarians (This one has perfect recording quality. Some albums I've loved the quality of on some days and not others, this one is 100% perfect).
Yggdrasil - Prose Edda
Shpongle - Are you Shpongled? (Basically their whole discography).
BT - This Binary Universe.
Oceanlab - Sirens of the sea.
Save for perhaps the oceanlab album which is just a personal pleasure, I think that any collection missing these is incomplete.
If you can handle some slightly more lowfi things
Infected Mushroom - The Gathering
Pleiadians - IFO
IMVHO electronic music works very well on headphones, particularly something like K701.