This doesn't really address the drugs you're asking about, but I've had very good luck with Abilify. It's an AP which also helps with depression (it's also weight neutral). The only problem is there's no generic & it's very expensive depending on your insurance situation.

As far as weight gain goes, I went off Zyprexa...but I gained 60 pounds in 8 months on it (but I was also on Seroquel at the time). It doesn't sound like you have a real weight problem, so you'll have to make the call on Zyprexa. I know what you mean about allowing yourself to gain weight & be happy, but the amount of weight I gained was unhealthy. Good luck making a healthy choice for yourself.