Lamictal. I'm not bipolar, so it's just for BPD (and with a bit of a kick for depressive symptoms). I like to think it helps. Still upping my dosage (I'm perpetually saying that, but because hormonal birth control impacts dosage, it's taken me a while to titrate up). I feel like I'm slightly more capable of controlling my emotions. I still go into deep emotional holes, but I find that I don't stay there for as long. I really wish I could tell you that it was a miracle drug, but I don't think that's the case for me. I am though, again on what would be around/possibly below the minimal effective dose (hard to tell because of the interaction with the birth control).
I wouldn't recommend an anti-psychotic unless you really struggle with psychotic symptoms or heavy dissociation. All of my pdocs (and everyone else I've come across) have told me that the side effect profile for most of the medications definitely outweigh whatever good they could do, at least for me. In all honesty though, sometimes I want to become a fat zombie. Eating and feeling nothing and not giving a $hit seems pretty awesome right about now.
I was on Wellbutrin but it made things worse actually. It really increased my anxiety, which did not help with my fear of abandonment. And it made me sweat a lot and smell funky.

Also I started Strattera for my ADHD, which could also be messing with my results. I'm not the best person to ask because fairly recently my pdoc and I decided to increase one med, start one med, and go off one med at the same time. I think my brain is still adjusting.
I've off and on put a lot of faith in medications. I can't really say I'm feeling that positive about them right now. I'm also in a terrible mood and want to cry. Read what you will into the efficacy of my medications from that tidbit of information.