I felt horrible. It mad me feel like I was looking out of someone else's eyes, I just was not with it. My doctor warned me not to stop taking them suddenly as you can feel suicidal, but I didn't care. They were bad pills.
My girlfriend is in a psych ward at the moment and has been put on Zoloft and Luvox as a combination, so I can't tell the EXACT effects but she seems to be getting better on them.
I can however comment on the fact that it makes her really really tired. She took it on its own one morning and she was asleep for a chunk of the day.