I agree that Raoden/Sarene had the best romance. I'd love to see even more, but, hey, Brandon doesn't write romance novels.
When Zane was introduced to complete the "romantic triangle" and give Elend some competition, I was like oh brother. I don't know if that was Brandon's intention or not to try to bring out the romantic subplot, but it didn't work for me.
It was my impression that it was not so much that she was choosing between the two men as it was choosing between the two different lifestyles. It didn't seem like she was romantically interested in Zane, only "professionally".
(Not Vasher/Vivenna though, at least not in the version I read. When they ended up together, I felt a let down and a huh? I needed more buildup to believe and be happy for them.)
Am I missing something here? I thought they went off together in the end for non-romantic reasons. (basically, Viv looking for a different life) Anyone else?