First I said, wow fantastic band but man, all those years I did not know them (started in 2009).
I liked every musicians, especially Portnoy because of his sound and his interaction with the crowd (I soon bought Scenes Live).
I loved their amazing melodies and harmonies. I loved John's playing, his ability of being soft at times and be darn heavy and fast after.
The only thing I was not sure I would like was James's voice but I got ok with it and kind of the right voice for the band.
Went over all their songs on the net, bought a few records, went to a few shows, I was hooked, then. A great band. Bought some of their solo albums, read as much about them, about their story. It was a big discovery for me.