An interesting poll! At this point, I'd probably rank DT12 first. A great balance of heavyness and melody. The Ashtonishing is the second on the list. Musically an excellent album, but there should be a bit more metal and technical sections to keep my interest. Still, every once in a while a must listen.
ADTOE takes the third spot. An amazing album, but for some reason I need long breaks before getting back to this album. Perhaps I overlistened to it when it was released? Then SC is fourth and BCASL fifth.