Klonie Gun
Techno and Trance sound almost similar but there IS a difference. Techno is computerized music that varies from any BPM (beats per minute), ranging from regular dance-style techno to hardcore techno. Hardcore techno is a kind of techno that has insanely fast beats (180-200+ BPM!)
Trance is a newer kind of techno that is seemingly more common in the clubs and fashion shops. Thus, I call it Nu-Techno. It is a bit more trendy than techno. Trance also has more "pop" than techno does.
Wrong...sorta.
Real techno is usually much harder than trance ever is or ever will be. Techno is old, while Trance is relativly new (early-mid 90s). A lot of trance has vocals (also called Vocal Trance) while techno tends to not have any vocals at all.
The following is taken from the Guide to Electronic Music.
Techno is the depressing, gritty dystopian genre, a musical personification of the industrial, recession-sacked automotive industries of Detroit in the late 80s.The term was lifted from Alvin Toffler's book "The Third Wave", and by 1990 it had become the music press' fancy word for everything electronic. With that said, it makes sense that the best stuff isn't coming from that city anymore, since the word hardly represents the music--even when used in the proper context. But what it lacks in soul it more than makes up in purity of sound and a mythology so romantic that it can't possibly figure out what to do with itself anymore.
Trance is the most emotional genre. It can make you cry, make you shout, make you cheer, and make you celebrate absolutely nothing of substance except pure, ecstatic bliss. This is interesting, when at one time it was very repetitive and hypnotic (hence its label 'trance') and was very easy to get lost in whilst divulging in aforementioned emotions. But now it's quite difficult to get entranced due mostly to the fact that the genre has devolved into such trite, derivative junk that even the biggest culprits of it are having trouble lying about how interesting it is. If you ignore the cliched, breakdown-build-anthem template side of the genre that is so canned and predictable you can set your watch to it, trance is still pretty fun. Unless you're trying to be a Sasha worshipping pretentious snob not partaking in that, in which case you don't even want to admit you're listening to trance anymore.
The "trite, derivative junk that even the biggest culprits of it are having trouble lying about how interesting it is" is what is referred to "pop trance" or "commercial trance" i.e. the trance you hear on the radio during regular air time.
Good examples of Trance:
Three Drives - Greece 2000 (progressive trance)
Lost Tribe - Gamemaster (progressive)
Steve Morely - Incarnations (sometimes classified as anthem trance)
Lightforce - Join Me (sometimes classified as anthem trance)
Chicane - Offshore/Saltwater (sometimes classified as Ibiza Trance)
Ian Van Dahl - Castles In The Sky (epic trance)
Alice Deejay - Better off Alone (Great classic

epic trance)
Paul Van Dyk - For An Angel
Emanual Top - Acid Phase
DJ Panda - Forever Young (cheesy I know, but you know its an awesome song

)
Good Examples of Techno:
Dopplereffekt - Superior Race
Jeff Mills - The Bells
David Whittaker - Lazy Jones (not hard at all but still a good representation of techno)
Program 2 - The Trip
Thomas Schumacher - The Simpleton
Carl Lekebusche - Planet of Drums
Fuzz Face - Friends
Dave the Drummer - Shudder & Twitch
Chris Liberator - Black Star Rising
Junk Project - Brain Tool
10 Good examples of each genre.
Everyone should deffinately take a look at the
Guide To Electronic Music. I know you will discover some new generes and some great tunes if you take a look. Ishkur (writer of teh Guide) is very biased though. He's more into the grassroots type of electronica generally shooing away the new stuff. Still a good guide though.