Debut - I think "Absinthe & Rue", although I haven't ever listened to that one enough to know for sure if that's the song I don't care for too much. The chorus was extremely weak with Rod's vocals.
Damnation Game - "Secrets". It just seems weak. I'm not crazy about the Chorus in "Dressed to Kill" either, although I like the song overall.
Divine Wings - I like them all, but I could leave either "Out of the Ashes" or "The Witching Hour" off and not be too upset.
Twilight in Olympus - "The Relic", even though it's not a bad song, it's just the least memorable.
V - I like them all, which is really surprising since didn't really like any of them when I first heard this CD. I think my brain was on vacation when got this one as it's just awesome now! I actually get chills sometimes when "Rediscovery Part I" is playing. I don't know why but the keyboard and guitar together alone just make such an awesome sound!
The Odyssey - "The Turning", which again isn't a bad song, just not as memorable as the rest (kind of like "The Relic" on TIO)
Overall, I think even the lesser songs from SyX are still good songs. They set a very high bar for themselves (as I don't believe anyone else can) which makes it strange to comment negatively on anything they do. I know one thing that surprises me is how many people don't like the song "Pharaoh". I think the change of tempo in the chorus (and the guitar riff) is just awesome! I like the premise of the song too. I think this is one of their best! The other I don't understand is "Incantations of the Apprentice". I've said it before that I think the intro to this song is just amazingly cool! he rest of the song is great too, although I can undersand why some people might not be crazy about the verses, but both of these songs have been described as "hated" in this thread, which really surprises me. I don't know, maybe being such a huge SyX fan I just find the good in all of their songs, but I can't say there is a singel SyX song I even dislike (with exception of some from the first album due to the poor vocals).