I was getting ready to vote for #2, then I saw the "reveal" had already occurred.
For what it's worth, I have taken Chantix, and so have several of my friends. I had NO side effects whatsoever, and I literally forgot cigarettes existed. It was amazing, truly. My sister, who smoked 2-3 packs a day for 40 years, also quit smoking recently by taking Chantix. She said her only side effect was that she couldn't sleep. It was not a manic, restless, exhausted lack of sleep, though. She said she just wasn't sleepy, but felt rested and peaceful.
Obviously, side effects vary a lot from person to person, but I've never personally known anyone to have bad side effects from Chantix. I would say it is WELL worth a try.