I think you are a liar.
No but seriously. I know IA might be their most popular, but going by the votes on the PT-forum, is that really reliable in this case? Arent most PT fans coming from the softer side of the music-universe? I came from the other side and could not get into either IA nor Deadwing, FoaBP got me hooked.
Looks like Season likes Katatonia and Anathema, from that perspective i would recommend FoaBP first.