For me, Myrath and Vanden Plas were my two favorites.
But very strong honorable mentions are Portnoy's Shattered Fortress, Orphaned Land, Metal Church, Angel Dust, and even (gasp) Seven Spires.
Anubis Gate and Daydream XI - just got both. Love the AG, but the Daydream XI is sick. I mean I'm really loving that disc! Can't wait to see them next week! :)
Article posted on Billboard magazine's website says that it's now a group effort, but as far as I can tell that Al Pitrelli is the guy calling the shots now.
http://www.billboard.com/articles/columns/rock/7940866/trans-siberian-orchestra-future-plans
Dream Theater brings it's 25th anniversary tour to North America this fall.
http://www.dreamtheater.net/news/images-words-beyond-tour-dates-north-america-182156