Having listened to Remedy Lane a few times I now know: Pain Of Salvation rocks! The only thing i dislike is when the vocalist gets really high with his voice arghh... well I hope I'll get accustomed to that
The Obvious ones like Dream Theater and Symphony X, which have already been mentioned, and then one that nobody has mentioned yet... Andromeda. They are a swedish (i think?) prog metal band.
Check out Extension Of The Wish by Andromeda - amazing!