as has been stated, the statement "electronic music" is about as specific as saying "music with guitars" ... so, I'm going to direct you over to Ishkur's Guide to Electronic Music. Spend some time there, listen through the various samples, and see what you like =) --
http://www.ishkur.com/music/
judging from the two artists you mentioned... PvD makes trance, usually in the realm of epic. Alot of people consider him a hack, because his music isn't always the most deep, nor innovative (anymore, at least.. when he started several years ago, he broke ground)... not that most electronic music is all that deep. On the flip, the other artist you mentoned, Juno Reactor, is, imho, really awesome quality electronic music. Even those who don't like trance, can't deny that JR is extremely inovative music.
So, based Juno Reactor, I'll suggest:
Eat Static
Hallucinogen / Younger Brother / Shpongle (same guy, different style/production names)
and maybe give a listen to the
www.philosomatika.com radio station. this is psytrance.