I react well to most medications, so I could probably reccommend either of these meds to you and be okay with it. Lamictal I was actually on for my epilepsy and was on that for about 5 years. Never had any problems, and never had any bipolar episodes. I was diagnosed as bipolar after stopping my Lamictal, so I think the Lamictal stopped me from having bipolar symptoms, which is awesome. However, Lamictal is very expensive, even for the generic...so that's something to consider.
Never had many issues with Lithium to be honest. It was harder to feel emotion, but I wasn't by any means a "zombie". It's a lot cheaper than Lamictal. Very affordable, especially if you are a broke college student like me! Haha. I still experienced some episodes while taking Lithium, although they weren't as long and they weren't as bad.
Hope this helps!