surprisingly I found some of my best trance music off of Myspace artist and downloaded there stuff. I'm not to good at clasifying between trance/techno/rave/ and such but i highly recomend super troopers techno song. It is by far the best for subs
Daft Punk is pretty good - I like the homework CD alot better than their latest release. Da Funk and Around the World are probably two of their bset songs ever. Also consider these other artists:
DJ Tiesto Ferry Corsten Armin Van Burren Paul Oakenfold Paul van Dyk
Search for some ministry of sound, or search for any of those artists and download their sets, not the individual music. Some of their long sets are awesome. DJ Tiesto's summerbreeze and Live at Samfundet Trondheim are a few of my favorites. He is my top artist besides listening to rap and I love his stuff.
Also consider Basement Jaxx, Prodigy, The Crystal Method (Trip Like I Do from their Vegas CD has INCREDIBLY DEEP bass within like 10 seconds of the song)
I used to be a DJ back in the day and I spun alot of that type of music. I miss it!!! If you want more artists I'm sure I could come back with some more, I'm at work right now listing them off the top of my head.
Aquanuts - Deep Sea (The remixed versions not the originals) Funk Einsatz - Punk
Hope that gets you started for now. All of the music kicks seriously tail.