Some of my Favorite trance songs;

AFK - Whiplash ~~~~~ By far MY FAVORITE trance song
DJ Foggy - Come Into My Dreams
DJ Foggy - Your Eyes
Silverblue - Do you know (vocal mix)
Dj Irene - Open your mind
Darude - Sandstorm
Kernkraft - Zombie Nation

Paul Van Dyke has some great songs
DJ tiesto has some good songs
Dj Mystik is a must
Dj Babyboi (more of a breakbeat DJ, but a great underground DJ)
Dj Heartbreak is a must too